Responses
Sister's wedding night, punch & rape: everything matches your request but Seme's not a groom. HA+
http://www.mangago.zone/read-manga/suna_no_rasen/
beta
Umm, I read the manga I'm trying to find a long time ago. and now I wanna re-read it. well I don't really remember much about the plot but if I not mistaken it about a marriage between seme and uke's sister I think. hmm then after the marriage party seme go to uke's room and punch uke stomach then seme rape uke in that honeymoon night. I don't know if I remember it correctly. m(_ _)m but I hope someone know this manga ^^ thanks anyway!