diff --git a/app/src/main/java/jp/juggler/subwaytooter/ActPost.kt b/app/src/main/java/jp/juggler/subwaytooter/ActPost.kt
index 160accc3..15b12ab6 100644
--- a/app/src/main/java/jp/juggler/subwaytooter/ActPost.kt
+++ b/app/src/main/java/jp/juggler/subwaytooter/ActPost.kt
@@ -1600,9 +1600,18 @@ class ActPost : AppCompatActivity(), View.OnClickListener, PostAttachment.Callba
 							)
 						)
 					}
-					val multipart_body = MultipartBody.Builder()
-						.setType(MultipartBody.FORM)
-						.addFormDataPart(
+					
+					
+					if(account.isMisskey){
+						val multipart_builder = MultipartBody.Builder()
+							.setType(MultipartBody.FORM)
+
+						val apiKey = account.token_info?.parseString(TootApiClient.KEY_API_KEY_MISSKEY)
+						if( apiKey?.isNotEmpty()== true){
+							multipart_builder.addFormDataPart("i",apiKey)
+						}
+						
+						multipart_builder.addFormDataPart(
 							"file", getDocumentName(uri), object : RequestBody() {
 								override fun contentType() : MediaType? {
 									return MediaType.parse(opener.mimeType)
@@ -1626,26 +1635,72 @@ class ActPost : AppCompatActivity(), View.OnClickListener, PostAttachment.Callba
 								}
 							}
 						)
-						.build()
-					
-					val request_builder = Request.Builder()
-						.post(multipart_body)
-					
-					val result = client.request("/api/v1/media", request_builder)
-					
-					opener.deleteTempFile()
-					onUploadEnd()
-					
-					val jsonObject = result?.jsonObject
-					if(jsonObject != null) {
-						val a = parseItem(::TootAttachment, ServiceType.MASTODON, jsonObject)
-						if(a == null) {
-							result.error = "TootAttachment.parse failed"
-						} else {
-							pa.attachment = a
+
+						val request_builder = Request.Builder().post(multipart_builder.build())
+						
+						val result = client.request("/api/drive/files/create", request_builder)
+						
+						opener.deleteTempFile()
+						onUploadEnd()
+						
+						val jsonObject = result?.jsonObject
+						if(jsonObject != null) {
+							val a = parseItem(::TootAttachment, ServiceType.MISSKEY, jsonObject)
+							if(a == null) {
+								result.error = "TootAttachment.parse failed"
+							} else {
+								pa.attachment = a
+							}
 						}
+						return result
+					}else{
+						val multipart_body = MultipartBody.Builder()
+							.setType(MultipartBody.FORM)
+							.addFormDataPart(
+								"file", getDocumentName(uri), object : RequestBody() {
+									override fun contentType() : MediaType? {
+										return MediaType.parse(opener.mimeType)
+									}
+									
+									@Throws(IOException::class)
+									override fun contentLength() : Long {
+										return content_length
+									}
+									
+									@Throws(IOException::class)
+									override fun writeTo(sink : BufferedSink) {
+										opener.open().use { inData ->
+											val tmp = ByteArray(4096)
+											while(true) {
+												val r = inData.read(tmp, 0, tmp.size)
+												if(r <= 0) break
+												sink.write(tmp, 0, r)
+											}
+										}
+									}
+								}
+							)
+							.build()
+						
+						val request_builder = Request.Builder()
+							.post(multipart_body)
+						
+						val result = client.request("/api/v1/media", request_builder)
+						
+						opener.deleteTempFile()
+						onUploadEnd()
+						
+						val jsonObject = result?.jsonObject
+						if(jsonObject != null) {
+							val a = parseItem(::TootAttachment, ServiceType.MASTODON, jsonObject)
+							if(a == null) {
+								result.error = "TootAttachment.parse failed"
+							} else {
+								pa.attachment = a
+							}
+						}
+						return result
 					}
-					return result
 					
 				} catch(ex : Throwable) {
 					return TootApiResult(ex.withCaption("read failed."))
diff --git a/app/src/main/java/jp/juggler/subwaytooter/api/entity/MisskeyReaction.kt b/app/src/main/java/jp/juggler/subwaytooter/api/entity/MisskeyReaction.kt
new file mode 100644
index 00000000..00767d84
--- /dev/null
+++ b/app/src/main/java/jp/juggler/subwaytooter/api/entity/MisskeyReaction.kt
@@ -0,0 +1,24 @@
+//package jp.juggler.subwaytooter.api.entity
+//
+//enum class MisskeyReaction(val name:String,val drawableId:Int){
+//
+//
+//	Like("like"),
+//	Love("love"),
+//	Laugh("laugh"),
+//	Hmm("hmm"),
+//	Surprise("surprise"),
+//	Congrats("congrats"),
+//	Angry("angry"),
+//	Confused("confused"),
+//	Rip("rip"),
+//	Pudding("pudding")	;
+//
+//	companion object {
+//		val map: HashMap<String,MisskeyReaction> by lazy {
+//			HashMap<String,MisskeyReaction>().apply {
+//
+//			}
+//		}
+//	}
+//}
\ No newline at end of file
diff --git a/app/src/main/java/jp/juggler/subwaytooter/util/PostHelper.kt b/app/src/main/java/jp/juggler/subwaytooter/util/PostHelper.kt
index e0f72a15..c02d355c 100644
--- a/app/src/main/java/jp/juggler/subwaytooter/util/PostHelper.kt
+++ b/app/src/main/java/jp/juggler/subwaytooter/util/PostHelper.kt
@@ -335,9 +335,6 @@ class PostHelper(
 							}
 						}
 						
-						// TODO Misskeyの場合、NSFWするにはアップロード済みの画像を drive/files/update で更新する
-						// json.put("sensitive", bNSFW)
-						
 						if(spoiler_text?.isNotEmpty() == true ) {
 							json.put(
 								"cw",
@@ -364,6 +361,15 @@ class PostHelper(
 								val a = pa.attachment ?: continue
 								// Misskeyは画像の再利用に問題がないので redraftとバージョンのチェックは行わない
 								array.put(a.id.toString())
+								
+								// Misskeyの場合、NSFWするにはアップロード済みの画像を drive/files/update で更新する
+								if( bNSFW){
+									val params = account.putMisskeyApiToken(JSONObject())
+										.put("fileId",a.id.toString())
+										.put("isSensitive",true)
+									val r = client.request("/api/drive/files/update",params.toPostRequestBuilder())
+									if(r==null|| r.error!=null ) return r
+								}
 							}
 							if( array.length() > 0) json.put("mediaIds", array)
 						}