Want to read Dumb bottom and erotic horny top... everytime he see bottom.. he got hard ◉...

http://www.mangago.zone/read-manga/down_and_dirty/?gX6Q this kinda fits your request~ kinda dark tho and got some triggering scenes. Just a heads up!

hit on by a kinky guy

http://www.mangago.zone/read-manga/kamoku_na_shinyuu_ga_tadano_muttsuri_deshita/

I'm not sure but the seme always got hard seeing the uke