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

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

(C84) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Yoru wa Kimama ni- | -Nightly Indulgence- (Kuttsukiboshi) [English] {Hikikomori Honyaku ft. Hanabi}

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

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

(C85) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Naisho no Oshigoto- | -Secret Work- (Kuttsukiboshi) [English] {Hikikomori Honyaku}

(C85) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Naisho no Oshigoto- (Kuttsukiboshi)

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

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

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