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

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

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

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

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

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

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

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

(C86) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Bishonure Gakkou- | -Drenched School- (Kuttsukiboshi) [English] {Hikikomori Honyaku ft. Hanabi-Sempai}

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