(C93) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Sekai ni Houkago- 丨緊扣的星星 -世界的放學後- (Kuttsukiboshi) [Chinese] [沒有漢化]
Bubble Bubble Mermaid Princess
(C84) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Yoru wa Kimama ni- | -Nightly Indulgence- (Kuttsukiboshi) [English] {Hikikomori Honyaku ft. Hanabi}
(C91) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Ai no Suzukuri- | -Building a Lovenest- (Kuttsukiboshi) [English]
(C95) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Shouwa Ecchi- (Kuttsukiboshi)
(CR37) [DIOGENES CLUB (Haikawa Hemlen)] Otome No HiMEgoto (Mai-HiME)
(C95) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Shouwa Ecchi- (Kuttsukiboshi) [Chinese] [沒有漢化]
(C93) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Sekai ni Houkago- | -The World's After School Time- (Kuttsukiboshi) [English]
(C84) [Ishikawa Pro (Ishikawa Naoya)] Kuttsukiboshi -Yoru wa Kimama ni- (Kuttsukiboshi)