diff --git a/src/main/kotlin/dev/usbharu/hideout/service/activitypub/ActivityPubAcceptService.kt b/src/main/kotlin/dev/usbharu/hideout/service/activitypub/ActivityPubAcceptService.kt
new file mode 100644
index 00000000..d0746c44
--- /dev/null
+++ b/src/main/kotlin/dev/usbharu/hideout/service/activitypub/ActivityPubAcceptService.kt
@@ -0,0 +1,8 @@
+package dev.usbharu.hideout.service.activitypub
+
+import dev.usbharu.hideout.domain.model.ActivityPubResponse
+import dev.usbharu.hideout.domain.model.ap.Accept
+
+interface ActivityPubAcceptService {
+    suspend fun receiveAccept(accept: Accept): ActivityPubResponse
+}
diff --git a/src/main/kotlin/dev/usbharu/hideout/service/activitypub/ActivityPubAcceptServiceImpl.kt b/src/main/kotlin/dev/usbharu/hideout/service/activitypub/ActivityPubAcceptServiceImpl.kt
new file mode 100644
index 00000000..f37428c2
--- /dev/null
+++ b/src/main/kotlin/dev/usbharu/hideout/service/activitypub/ActivityPubAcceptServiceImpl.kt
@@ -0,0 +1,28 @@
+package dev.usbharu.hideout.service.activitypub
+
+import dev.usbharu.hideout.domain.model.ActivityPubResponse
+import dev.usbharu.hideout.domain.model.ActivityPubStringResponse
+import dev.usbharu.hideout.domain.model.ap.Accept
+import dev.usbharu.hideout.domain.model.ap.Follow
+import dev.usbharu.hideout.exception.ap.IllegalActivityPubObjectException
+import dev.usbharu.hideout.service.impl.IUserService
+import io.ktor.http.*
+import org.koin.core.annotation.Single
+
+@Single
+class ActivityPubAcceptServiceImpl(private val userService: IUserService) : ActivityPubAcceptService {
+    override suspend fun receiveAccept(accept: Accept): ActivityPubResponse {
+        val value = accept.`object` ?: throw IllegalActivityPubObjectException("object is null")
+        if (value.type.contains("Follow").not()) {
+            throw IllegalActivityPubObjectException("Invalid type ${value.type}")
+        }
+
+        val follow = value as Follow
+        val userUrl = follow.`object` ?: throw IllegalActivityPubObjectException("object is null")
+        val followerUrl = follow.actor ?: throw IllegalActivityPubObjectException("actor is null")
+        val user = userService.findByUrl(userUrl)
+        val follower = userService.findByUrl(followerUrl)
+        userService.follow(user.id, follower.id)
+        return ActivityPubStringResponse(HttpStatusCode.OK, "accepted")
+    }
+}
diff --git a/src/main/kotlin/dev/usbharu/hideout/service/activitypub/ActivityPubServiceImpl.kt b/src/main/kotlin/dev/usbharu/hideout/service/activitypub/ActivityPubServiceImpl.kt
index dbcc3af2..1c9a11e7 100644
--- a/src/main/kotlin/dev/usbharu/hideout/service/activitypub/ActivityPubServiceImpl.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/service/activitypub/ActivityPubServiceImpl.kt
@@ -2,7 +2,7 @@ package dev.usbharu.hideout.service.activitypub
 
 import com.fasterxml.jackson.databind.JsonNode
 import com.fasterxml.jackson.module.kotlin.readValue
-import dev.usbharu.hideout.config.Config
+import dev.usbharu.hideout.config.Config.configData
 import dev.usbharu.hideout.domain.model.ActivityPubResponse
 import dev.usbharu.hideout.domain.model.ap.Follow
 import dev.usbharu.hideout.domain.model.job.DeliverPostJob
@@ -19,12 +19,13 @@ import org.slf4j.LoggerFactory
 class ActivityPubServiceImpl(
     private val activityPubReceiveFollowService: ActivityPubReceiveFollowService,
     private val activityPubNoteService: ActivityPubNoteService,
-    private val activityPubUndoService: ActivityPubUndoService
+    private val activityPubUndoService: ActivityPubUndoService,
+    private val activityPubAcceptService: ActivityPubAcceptService
 ) : ActivityPubService {
 
     val logger: Logger = LoggerFactory.getLogger(this::class.java)
     override fun parseActivity(json: String): ActivityType {
-        val readTree = Config.configData.objectMapper.readTree(json)
+        val readTree = configData.objectMapper.readTree(json)
         logger.debug("readTree: {}", readTree)
         if (readTree.isObject.not()) {
             throw JsonParseException("Json is not object.")
@@ -41,7 +42,7 @@ class ActivityPubServiceImpl(
     @Suppress("CyclomaticComplexMethod", "NotImplementedDeclaration")
     override suspend fun processActivity(json: String, type: ActivityType): ActivityPubResponse {
         return when (type) {
-            ActivityType.Accept -> TODO()
+            ActivityType.Accept -> activityPubAcceptService.receiveAccept(configData.objectMapper.readValue(json))
             ActivityType.Add -> TODO()
             ActivityType.Announce -> TODO()
             ActivityType.Arrive -> TODO()
@@ -51,7 +52,7 @@ class ActivityPubServiceImpl(
             ActivityType.Dislike -> TODO()
             ActivityType.Flag -> TODO()
             ActivityType.Follow -> activityPubReceiveFollowService.receiveFollow(
-                Config.configData.objectMapper.readValue(
+                configData.objectMapper.readValue(
                     json,
                     Follow::class.java
                 )
@@ -72,7 +73,7 @@ class ActivityPubServiceImpl(
             ActivityType.TentativeReject -> TODO()
             ActivityType.TentativeAccept -> TODO()
             ActivityType.Travel -> TODO()
-            ActivityType.Undo -> activityPubUndoService.receiveUndo(Config.configData.objectMapper.readValue(json))
+            ActivityType.Undo -> activityPubUndoService.receiveUndo(configData.objectMapper.readValue(json))
             ActivityType.Update -> TODO()
             ActivityType.View -> TODO()
             ActivityType.Other -> TODO()