(C88) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Yuudachi Hanabi- | -Evening Showers and Fireworks- (Kuttsukiboshi) [English] {Hikikomori Honyaku ft. Hanabi}

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

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

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

(C87) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Ichaichaboshi- (Kuttsukiboshi)

(C94) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Natsu no Owari Ni- (Kuttsukiboshi) [English]

[Suzukuri Ransei] Todokanai Zekkyou - Nicht Erreichen Schreien

(C90) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Kikenna Senpai- (Kuttsukiboshi)

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

(C90) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Kikenna Senpai- | -Dangerous Senpai- (Kuttsukiboshi) [English]