Haruna Mao https://www.pixiv.net/member.php?id=8213

https://twitter.com/maupon

K-ON! Anthology Comic ch13: Murder! released Apr 26 '10 4-koma Anime Comedy Music School life Spin-off
Yurarararakkusu by Haruna Mao, Musasiya Chogenbo, and Ukyochu Yuru Yuri Doujin released Feb 17 '13 Akane x Akari Chinatsu x Yui Comedy Futanari Incest Kyouko x Yui Lolicon Lots of sex NSFW Yuri
K-ON! Anthology Comic ch13 released Jun 19 '14 4-koma Anime Comedy Music School life Spin-off