[Unknown (UNKNOWN)] Yogari Sugite Okashiku Narisou 1
[Unknown (UNKNOWN)] Yogari Sugite Okashiku Narisou 3
(C87) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Ichaichaboshi- (Kuttsukiboshi)
(C87) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Ichaichaboshi- (Kuttsukiboshi) [Chinese] [沒有漢化]
(C85) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Naisho no Oshigoto- | -Secret Work- (Kuttsukiboshi) [English] {Hikikomori Honyaku}
(COMITIA102) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Kininaru Futari- | -The Curious Pair- (Kuttsukiboshi) [English] {Hikikomori Honyaku}
[Unknown (UNKNOWN)] Jouge Kankei 3
(C84) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Yoru wa Kimama ni- | -Nightly Indulgence- (Kuttsukiboshi) [English] {Hikikomori Honyaku ft. Hanabi}
[Unknown (UNKNOWN)] Shi no Go no Itteru Baai ja Nai [English] [Anzu]
(C94) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Natsu no Owari Ni- (Kuttsukiboshi) [Chinese] [沒有漢化]