(COMITIA102) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Kininaru Futari- | -The Curious Pair- (Kuttsukiboshi) [English] {Hikikomori Honyaku}

(COMITIA104) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Abunai Onsen- (Kuttsukiboshi)

(C93) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Sekai ni Houkago- | -The World's After School Time- (Kuttsukiboshi) [English]

(C94) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Natsu no Owari Ni- (Kuttsukiboshi) [Chinese] [沒有漢化]

(COMITIA104) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Abunai Onsen- | -Dangerous Hotspring- (Kuttsukiboshi) [English] {Hikikomori Honyaku ft. Hanabi}

(C87) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Ichaichaboshi- (Kuttsukiboshi) [Chinese] [沒有漢化]

(SC58) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Mousou Test- (Kuttsukiboshi)

(SC58) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Mousou Test- | -Delusion Test- (Kuttsukiboshi) [English] {fragmentedhollow}

(C91) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Ai no Suzukuri- | -Building a Lovenest- (Kuttsukiboshi) [English]

(C84) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Yoru wa Kimama ni- (Kuttsukiboshi)