(C87) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Ichaichaboshi- (Kuttsukiboshi)
(C90) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Kikenna Senpai- | -Dangerous Senpai- (Kuttsukiboshi) [English]
[Unknown (UNKNOWN)] Yogari Sugite Okashiku Narisou 2
[Unknown (UNKNOWN)] Jouge Kankei 3
[Unknown (UNKNOWN)] Jouge Kankei ZERO
Kitan Jikenroku Hitotara no Sumika Ni
(C87) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Ichaichaboshi- (Kuttsukiboshi) [Chinese] [沒有漢化]
[Unknown (UNKNOWN)] Shi no Go no Itteru Baai ja Nai [English] [Anzu]
(COMITIA102) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Kininaru Futari- | -The Curious Pair- (Kuttsukiboshi) [English] {Hikikomori Honyaku}
[Unknown (UNKNOWN)] Jounetsu Shindo | The Depth of Passion [English] [Anzu]