diff --git a/src/main/kotlin/kr/co/vividnext/sodalive/creator/admin/content/series/CreatorAdminContentSeriesService.kt b/src/main/kotlin/kr/co/vividnext/sodalive/creator/admin/content/series/CreatorAdminContentSeriesService.kt
index 73ff878..49b6f63 100644
--- a/src/main/kotlin/kr/co/vividnext/sodalive/creator/admin/content/series/CreatorAdminContentSeriesService.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/creator/admin/content/series/CreatorAdminContentSeriesService.kt
@@ -48,18 +48,20 @@ class CreatorAdminContentSeriesService(
         val keywords = request.keyword
             .replace("#", " #")
             .split(" ")
+            .asSequence()
             .map { it.trim() }
             .filter { it.isNotBlank() }
-            .toSet()
             .map {
-                val tag = if (!it.startsWith("#")) {
+                if (!it.startsWith("#")) {
                     "#$it"
                 } else {
                     it
                 }
-
-                val hashTag = hashTagRepository.findByTag(tag)
-                    ?: hashTagRepository.save(HashTag(tag))
+            }
+            .toSet()
+            .map {
+                val hashTag = hashTagRepository.findByTag(it)
+                    ?: hashTagRepository.save(HashTag(it))
 
                 val seriesKeyword = SeriesKeyword()
                 seriesKeyword.series = series
@@ -67,6 +69,7 @@ class CreatorAdminContentSeriesService(
 
                 seriesKeyword
             }
+            .toList()
 
         series.keywordList.addAll(keywords)