Koizumi&Kashihara Series
1.Kuzu BL(ch.3)-Back story of Koizumi since he was a child.
_http://www.mangago.me/read-manga/kuzu/nbt/tr_chapter-3/pg-1/
2.High School Lullaby-The Uke suddenly ties the Seme & raped him
_http://www.mangago.me/read-manga/high_school_lullaby/
3.Shoujo C-Their girl classmate sees them
_http://www.mangago.me/read-manga/shoujo_c/
4.Gakuen Tengoku-Their changed relationship after they had sex.
_http://www.mangago.me/read-manga/gakuen_tengoku_sore_wa_koi_desu_koizumi_kun/
1.Messiah no Yakubi
2.Messiah no Kyojitsu
3.Messiah no Sentaku
1 Henai
2 Henai Maotoko Hen
3 Henai Fumouhen
1.Ienai Itami o Daite Iru
2.Kusatta Rasen (spin off)
prequel ch.7) Gokujou Dessert from (Sekai wa Kimi de Mawatteru)
Two boys in a class receive sweets from admirers very often.
http://www.mangago.me/read-manga/sekai_wa_kimi_de_mawatteru/bt/217642/Vol1_Ch7?av=1
Gakuen Tengoku - Sore Wa Koi Desu Koizumi-kun