Sakaki Kayumu — https://www.pixiv.net/member.php?id=5577238
Also known as 127okayu and sakaki127
- Hidamari Sketch Anthology Comic ch14: Hidamari Et Cetera *Midnight Party* Hidamari Sketch Doujin released Apr 7 '14 4-koma Comedy
- Hidamari Sketch Anthology Comic ch10.5 Hidamari Sketch Doujin released Sep 1 '14 Comedy
- Secret Borderline Love Live! Doujin released Jul 22 '22 Kotori x Nico Yuri
- Secret Weekend 1 Love Live! Doujin released Jul 22 '23 Aaaaaangst Kotori x Nico Yuri
- Secret Weekend 2 Love Live! Doujin released Jul 22 '23 Kotori x Nico Sequel Yuri
- The Nightingale Sings No Prayer Love Live! Doujin released Jul 22 '24 Kotori x Nico Sequel Yuri