diff --git a/.github/PULL_REQUEST_TEMPLATE.md b/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000..08d9b7f
--- /dev/null
+++ b/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,12 @@
+# PULL REQUEST
+
+## Description
+
+
+## ScreenShots
+<p>
+  <img src="", width="300" />
+</p>
+
+## Reference
+- 
diff --git a/app/build.gradle b/app/build.gradle
index b1247a5..d279760 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -26,7 +26,7 @@ android {
         versionCode versionMajor * 10000 + versionMinor * 1000 + versionPatch * 100 + versionBuild
         versionName "${versionMajor}.${versionMinor}.${versionPatch}"
 
-        buildConfigField "String", "BASE_URL", "\"\""
+        buildConfigField "String", "BASE_URL", getBaseUrl("BASE_URL")
         project.archivesBaseName = "android-" + defaultConfig.versionCode
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         vectorDrawables.useSupportLibrary = true
@@ -129,3 +129,15 @@ dependencies {
     testImplementation deps.test.archCore
     testImplementation deps.test.robolectric
 }
+
+String getBaseUrl(String name) {
+    try {
+        def properties = new Properties()
+        properties.load(new FileInputStream(rootProject.file("./local.properties")))
+        def baseUrl = properties.getProperty(name)
+        if(baseUrl != null) baseUrl else "\"https://fake.api.com\""
+    } catch(FileNotFoundException e) {
+        e.printStackTrace()
+        "\"https://fake.api.com\""
+    }
+}
diff --git a/app/src/main/kotlin/kr/tooni/tooni/extensions/Activity.kt b/app/src/main/kotlin/kr/tooni/tooni/core/extensions/Activity.kt
similarity index 90%
rename from app/src/main/kotlin/kr/tooni/tooni/extensions/Activity.kt
rename to app/src/main/kotlin/kr/tooni/tooni/core/extensions/Activity.kt
index 5a10785..c0d9177 100644
--- a/app/src/main/kotlin/kr/tooni/tooni/extensions/Activity.kt
+++ b/app/src/main/kotlin/kr/tooni/tooni/core/extensions/Activity.kt
@@ -1,7 +1,7 @@
 /*
  * Created by Leo on 2021. 05. 19 ..
  */
-package kr.tooni.tooni.extensions
+package kr.tooni.tooni.core.extensions
 
 import androidx.appcompat.app.AppCompatActivity
 import androidx.lifecycle.LiveData
diff --git a/app/src/main/kotlin/kr/tooni/tooni/extensions/Context.kt b/app/src/main/kotlin/kr/tooni/tooni/core/extensions/Context.kt
similarity index 87%
rename from app/src/main/kotlin/kr/tooni/tooni/extensions/Context.kt
rename to app/src/main/kotlin/kr/tooni/tooni/core/extensions/Context.kt
index 3b08826..d7f8d67 100644
--- a/app/src/main/kotlin/kr/tooni/tooni/extensions/Context.kt
+++ b/app/src/main/kotlin/kr/tooni/tooni/core/extensions/Context.kt
@@ -1,7 +1,7 @@
 /*
  * Created by Leo on 2021. 05. 19 ..
  */
-package kr.tooni.tooni.extensions
+package kr.tooni.tooni.core.extensions
 
 import android.content.Context
 import androidx.annotation.DrawableRes
diff --git a/app/src/main/kotlin/kr/tooni/tooni/extensions/Fragment.kt b/app/src/main/kotlin/kr/tooni/tooni/core/extensions/Fragment.kt
similarity index 95%
rename from app/src/main/kotlin/kr/tooni/tooni/extensions/Fragment.kt
rename to app/src/main/kotlin/kr/tooni/tooni/core/extensions/Fragment.kt
index f82e37a..89aef62 100644
--- a/app/src/main/kotlin/kr/tooni/tooni/extensions/Fragment.kt
+++ b/app/src/main/kotlin/kr/tooni/tooni/core/extensions/Fragment.kt
@@ -1,7 +1,7 @@
 /*
  * Created by Leo on 2021. 04. 17 ..
  */
-package kr.tooni.tooni.extensions
+package kr.tooni.tooni.core.extensions
 
 import android.graphics.drawable.Drawable
 import androidx.annotation.ColorRes
diff --git a/app/src/main/kotlin/kr/tooni/tooni/extensions/Glide.kt b/app/src/main/kotlin/kr/tooni/tooni/core/extensions/Glide.kt
similarity index 96%
rename from app/src/main/kotlin/kr/tooni/tooni/extensions/Glide.kt
rename to app/src/main/kotlin/kr/tooni/tooni/core/extensions/Glide.kt
index d42f8d3..ddbb477 100644
--- a/app/src/main/kotlin/kr/tooni/tooni/extensions/Glide.kt
+++ b/app/src/main/kotlin/kr/tooni/tooni/core/extensions/Glide.kt
@@ -1,7 +1,7 @@
 /*
  * Created by Leo on 2021. 04. 17 ..
  */
-package kr.tooni.tooni.extensions
+package kr.tooni.tooni.core.extensions
 
 import android.graphics.drawable.Drawable
 import android.widget.ImageView
diff --git a/app/src/main/kotlin/kr/tooni/tooni/extensions/ImageView.kt b/app/src/main/kotlin/kr/tooni/tooni/core/extensions/ImageView.kt
similarity index 94%
rename from app/src/main/kotlin/kr/tooni/tooni/extensions/ImageView.kt
rename to app/src/main/kotlin/kr/tooni/tooni/core/extensions/ImageView.kt
index 31f0e4e..d5e5748 100644
--- a/app/src/main/kotlin/kr/tooni/tooni/extensions/ImageView.kt
+++ b/app/src/main/kotlin/kr/tooni/tooni/core/extensions/ImageView.kt
@@ -1,7 +1,7 @@
 /*
  * Created by Leo on 2021. 04. 17 ..
  */
-package kr.tooni.tooni.extensions
+package kr.tooni.tooni.core.extensions
 
 import android.graphics.drawable.Drawable
 import android.widget.ImageView
diff --git a/app/src/main/kotlin/kr/tooni/tooni/extensions/Primitive.kt b/app/src/main/kotlin/kr/tooni/tooni/core/extensions/Primitive.kt
similarity index 90%
rename from app/src/main/kotlin/kr/tooni/tooni/extensions/Primitive.kt
rename to app/src/main/kotlin/kr/tooni/tooni/core/extensions/Primitive.kt
index ef4c866..7d1bf56 100644
--- a/app/src/main/kotlin/kr/tooni/tooni/extensions/Primitive.kt
+++ b/app/src/main/kotlin/kr/tooni/tooni/core/extensions/Primitive.kt
@@ -1,7 +1,7 @@
 /*
  * Created by Leo on 2021. 04. 17 ..
  */
-package kr.tooni.tooni.extensions
+package kr.tooni.tooni.core.extensions
 
 import android.content.Context
 import android.content.res.Resources
diff --git a/app/src/main/kotlin/kr/tooni/tooni/extensions/RecyclerView.kt b/app/src/main/kotlin/kr/tooni/tooni/core/extensions/RecyclerView.kt
similarity index 92%
rename from app/src/main/kotlin/kr/tooni/tooni/extensions/RecyclerView.kt
rename to app/src/main/kotlin/kr/tooni/tooni/core/extensions/RecyclerView.kt
index e5d1417..3981ae0 100644
--- a/app/src/main/kotlin/kr/tooni/tooni/extensions/RecyclerView.kt
+++ b/app/src/main/kotlin/kr/tooni/tooni/core/extensions/RecyclerView.kt
@@ -1,7 +1,7 @@
 /*
  * Created by Leo on 2021. 04. 17 ..
  */
-package kr.tooni.tooni.extensions
+package kr.tooni.tooni.core.extensions
 
 import android.content.Context
 import androidx.recyclerview.widget.RecyclerView
diff --git a/app/src/main/kotlin/kr/tooni/tooni/extensions/Toast.kt b/app/src/main/kotlin/kr/tooni/tooni/core/extensions/Toast.kt
similarity index 95%
rename from app/src/main/kotlin/kr/tooni/tooni/extensions/Toast.kt
rename to app/src/main/kotlin/kr/tooni/tooni/core/extensions/Toast.kt
index 5614f78..e61e449 100644
--- a/app/src/main/kotlin/kr/tooni/tooni/extensions/Toast.kt
+++ b/app/src/main/kotlin/kr/tooni/tooni/core/extensions/Toast.kt
@@ -1,7 +1,7 @@
 /*
  * Created by Leo on 2021. 04. 17 ..
  */
-package kr.tooni.tooni.extensions
+package kr.tooni.tooni.core.extensions
 
 import android.content.Context
 import android.widget.Toast
diff --git a/app/src/main/kotlin/kr/tooni/tooni/core/model/Author.kt b/app/src/main/kotlin/kr/tooni/tooni/core/model/Author.kt
new file mode 100644
index 0000000..869be36
--- /dev/null
+++ b/app/src/main/kotlin/kr/tooni/tooni/core/model/Author.kt
@@ -0,0 +1,18 @@
+/*
+ * Created by Leo on 2021. 05. 19 ..
+ */
+package kr.tooni.tooni.core.model
+
+data class Author(
+    val id: Long,
+    val name: String,
+) {
+    
+    companion object {
+        
+        val EMPTY = Author(
+            id = 0,
+            name = ""
+        )
+    }
+}
diff --git a/app/src/main/kotlin/kr/tooni/tooni/core/model/Site.kt b/app/src/main/kotlin/kr/tooni/tooni/core/model/Site.kt
new file mode 100644
index 0000000..96bc90b
--- /dev/null
+++ b/app/src/main/kotlin/kr/tooni/tooni/core/model/Site.kt
@@ -0,0 +1,29 @@
+/*
+ * Created by Leo on 2021. 05. 19 ..
+ */
+package kr.tooni.tooni.core.model
+
+import com.google.gson.annotations.SerializedName
+
+data class Site(
+    val site: Type?,
+    val thumbnail: String?
+) {
+    
+    enum class Type {
+        @SerializedName("NAVER")
+        NAVER,
+        @SerializedName("DAUM")
+        DAUM,
+        @SerializedName("NONE")
+        NONE
+    }
+    
+    companion object {
+        
+        val EMPTY = Site(
+            site = Type.NONE,
+            thumbnail = null
+        )
+    }
+}
diff --git a/app/src/main/kotlin/kr/tooni/tooni/core/model/Webtoon.kt b/app/src/main/kotlin/kr/tooni/tooni/core/model/Webtoon.kt
new file mode 100644
index 0000000..c07f9d5
--- /dev/null
+++ b/app/src/main/kotlin/kr/tooni/tooni/core/model/Webtoon.kt
@@ -0,0 +1,27 @@
+/*
+ * Created by Leo on 2021. 05. 19 ..
+ */
+package kr.tooni.tooni.core.model
+
+data class Webtoon(
+    val id: Long,
+    val authors: List<Author>,
+    val site: Site,
+    val thumbnail: String,
+    val title: String
+) {
+    
+    companion object {
+        
+        val EMPTY = Webtoon(
+            id = 0,
+            authors = listOf(),
+            site = Site(
+                site = null,
+                thumbnail = null
+            ),
+            thumbnail = "",
+            title = ""
+        )
+    }
+}
diff --git a/app/src/main/kotlin/kr/tooni/tooni/core/model/WeekDay.kt b/app/src/main/kotlin/kr/tooni/tooni/core/model/WeekDay.kt
new file mode 100644
index 0000000..e0be55d
--- /dev/null
+++ b/app/src/main/kotlin/kr/tooni/tooni/core/model/WeekDay.kt
@@ -0,0 +1,14 @@
+/*
+ * Created by Leo on 2021. 05. 19 ..
+ */
+package kr.tooni.tooni.core.model
+
+enum class WeekDay(val value: String) {
+    MON("mon"),
+    TUE("thu"),
+    WED("wed"),
+    THU("thu"),
+    FRI("fri"),
+    SAT("sat"),
+    SUN("sun")
+}
diff --git a/app/src/main/kotlin/kr/tooni/tooni/data/api/ListApi.kt b/app/src/main/kotlin/kr/tooni/tooni/data/api/ListApi.kt
new file mode 100644
index 0000000..c7f75b2
--- /dev/null
+++ b/app/src/main/kotlin/kr/tooni/tooni/data/api/ListApi.kt
@@ -0,0 +1,24 @@
+/*
+ * Created by Leo on 2021. 05. 19 ..
+ */
+package kr.tooni.tooni.data.api
+
+import io.reactivex.rxjava3.core.Single
+import kr.tooni.tooni.data.response.WebtoonSearchResponse
+import kr.tooni.tooni.data.response.WebtoonWeekDayResponse
+import retrofit2.http.GET
+import retrofit2.http.Path
+import retrofit2.http.Query
+
+interface ListApi : Api {
+
+    @GET("search")
+    fun search(
+        @Query("query") query: String
+    ): Single<WebtoonSearchResponse>
+    
+    @GET("weekday/{weekday}")
+    fun getWebtoonsByDay(
+        @Path("weekday") weekday: String
+    ): Single<WebtoonWeekDayResponse>
+}
diff --git a/app/src/main/kotlin/kr/tooni/tooni/data/response/BaseResponse.kt b/app/src/main/kotlin/kr/tooni/tooni/data/response/BaseResponse.kt
new file mode 100644
index 0000000..f5ea872
--- /dev/null
+++ b/app/src/main/kotlin/kr/tooni/tooni/data/response/BaseResponse.kt
@@ -0,0 +1,22 @@
+/*
+ * Created by Leo on 2021. 05. 19 ..
+ */
+package kr.tooni.tooni.data.response
+
+import com.google.gson.annotations.SerializedName
+
+abstract class BaseResponse {
+    val status: Status? = null
+    val message: String? = null
+    
+    enum class Status {
+        @SerializedName("OK")
+        OK,
+        
+        @SerializedName("CLIENT_ERROR")
+        CLIENT_ERROR,
+        
+        @SerializedName("SERVER_ERROR")
+        SERVER_ERROR
+    }
+}
diff --git a/app/src/main/kotlin/kr/tooni/tooni/data/response/Response.kt b/app/src/main/kotlin/kr/tooni/tooni/data/response/Response.kt
deleted file mode 100644
index 1c91599..0000000
--- a/app/src/main/kotlin/kr/tooni/tooni/data/response/Response.kt
+++ /dev/null
@@ -1,6 +0,0 @@
-/*
- * Created by Leo on 2021. 04. 18 ..
- */
-package kr.tooni.tooni.data.response
-
-interface Response
diff --git a/app/src/main/kotlin/kr/tooni/tooni/data/response/WebtoonSearchResponse.kt b/app/src/main/kotlin/kr/tooni/tooni/data/response/WebtoonSearchResponse.kt
new file mode 100644
index 0000000..858f80a
--- /dev/null
+++ b/app/src/main/kotlin/kr/tooni/tooni/data/response/WebtoonSearchResponse.kt
@@ -0,0 +1,16 @@
+/*
+ * Created by Leo on 2021. 05. 19 ..
+ */
+package kr.tooni.tooni.data.response
+
+import kr.tooni.tooni.core.model.Webtoon
+
+data class WebtoonSearchResponse(
+    val data: WebtoonSearch?
+) : BaseResponse() {
+    
+    data class WebtoonSearch(
+        val query: String,
+        val webtoons: List<Webtoon>
+    )
+}
diff --git a/app/src/main/kotlin/kr/tooni/tooni/data/response/WebtoonWeekDayResponse.kt b/app/src/main/kotlin/kr/tooni/tooni/data/response/WebtoonWeekDayResponse.kt
new file mode 100644
index 0000000..1cdaf19
--- /dev/null
+++ b/app/src/main/kotlin/kr/tooni/tooni/data/response/WebtoonWeekDayResponse.kt
@@ -0,0 +1,17 @@
+/*
+ * Created by Leo on 2021. 05. 19 ..
+ */
+package kr.tooni.tooni.data.response
+
+import kr.tooni.tooni.core.model.Site
+import kr.tooni.tooni.core.model.Webtoon
+
+data class WebtoonWeekDayResponse(
+    val data: WebtoonWeekDay
+) : BaseResponse() {
+    
+    data class WebtoonWeekDay(
+        val sites: List<Site>,
+        val webtoons: List<Webtoon>
+    )
+}
diff --git a/app/src/main/kotlin/kr/tooni/tooni/features/day/DayWebtoonFragment.kt b/app/src/main/kotlin/kr/tooni/tooni/features/day/DayWebtoonFragment.kt
index 44402cd..75d8e62 100644
--- a/app/src/main/kotlin/kr/tooni/tooni/features/day/DayWebtoonFragment.kt
+++ b/app/src/main/kotlin/kr/tooni/tooni/features/day/DayWebtoonFragment.kt
@@ -8,9 +8,15 @@ import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import androidx.fragment.app.viewModels
+import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers
+import io.reactivex.rxjava3.disposables.CompositeDisposable
+import io.reactivex.rxjava3.schedulers.Schedulers
 import kr.tooni.tooni.R
 import kr.tooni.tooni.base.BaseFragment
+import kr.tooni.tooni.data.ApiProvider
+import kr.tooni.tooni.data.api.ListApi
 import kr.tooni.tooni.databinding.FragmentWebtoonByDayBinding
+import timber.log.Timber
 
 class DayWebtoonFragment :
     BaseFragment<FragmentWebtoonByDayBinding>(R.layout.fragment_webtoon_by_day) {
@@ -30,8 +36,6 @@ class DayWebtoonFragment :
     
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
-        
-        // do LiveData observe
     }
     
     companion object {
diff --git a/app/src/main/kotlin/kr/tooni/tooni/features/day/DayWebtoonViewModel.kt b/app/src/main/kotlin/kr/tooni/tooni/features/day/DayWebtoonViewModel.kt
index 16e3757..2b20547 100644
--- a/app/src/main/kotlin/kr/tooni/tooni/features/day/DayWebtoonViewModel.kt
+++ b/app/src/main/kotlin/kr/tooni/tooni/features/day/DayWebtoonViewModel.kt
@@ -3,7 +3,22 @@
  */
 package kr.tooni.tooni.features.day
 
+import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers
+import io.reactivex.rxjava3.schedulers.Schedulers
 import kr.tooni.tooni.base.BaseViewModel
+import kr.tooni.tooni.data.ApiProvider
+import kr.tooni.tooni.data.api.ListApi
+import timber.log.Timber
 
 class DayWebtoonViewModel : BaseViewModel() {
+    
+    init {
+        ApiProvider.create(ListApi::class.java).search("조석")
+            .subscribeOn(Schedulers.io())
+            .observeOn(AndroidSchedulers.mainThread())
+            .subscribe({
+               // do something
+            }, Timber::e)
+            .addDisposable()
+    }
 }