Responses
Sounds like this one.
http://www.mangago.zone/read-manga/raise_wa_tanin_ga_ii/
Yes yes yes that one was it thank you so much
Guy in high school is about to marry a check I think it's lit arranged marriage or something and he's like a total mafia guy you like kill someone or something the girl is shy and then in like the 3rd Chapter she goes on like a little Rampage in the classroom and then all sudden this guy wants to make sweet sweet love he wants her