![](https://pic1.mangapicgallery.com/r/avatar/d3/u4365_50x50.jpg?2)
http://www.mangago.zone/read-manga/xxx_allergy/
http://www.mangago.zone/read-manga/secret_xxx/
and spin-off :
http://www.mangago.zone/read-manga/therapy_game/
http://www.mangago.zone/read-manga/therapy_game_restart/
http://www.mangago.zone/read-manga/ookami_papa_wa_hitsuji_tsura_shite_yatte_kuru/
spin-off :
http://www.mangago.zone/read-manga/sensei_wa_butchozura_shite_yatte_kuru/
http://www.mangago.zone/read-manga/drugless_sex/
spin-off:
http://www.mangago.zone/read-manga/drag_less_sex_2_tatsumi_to_inui/
http://www.mangago.zone/read-manga/abarenbo_honey/
spin-off:
http://www.mangago.zone/read-manga/amaenbo_honey/
http://www.mangago.zone/read-manga/akai_ito_no_shikkou_yuuyo/
spin-off:
http://www.mangago.zone/read-manga/kanawanu_koi_no_musubikata/
A good yaoi with side character spin off series thank you ahead of time!