http://www.mangago.me/read-manga/koisuru_boukun/mh/v09/c006/pg-1/
he is not begging but... he does not say no? and he says that Mo-kun should have more self confidence so...? anyway it looks super consensual to me (〜 ̄△ ̄)〜
http://www.mangago.me/read-manga/koisuru_boukun/mh/v08/c011/8/
and in this one he does not run away AND he undresses by himself (only the shirt though)
well Sou-san is the king of tsundere sooo I'm pretty sure the rappish tone of their smex is kind of reassuring ? (don't remember where and it's too late for me to look for it but at some point he actually regrets "why won't he force like before ?")
(sorry for the weird english, salut les autres francophones ヾ(❀╹◡╹)ノ~ ! and happy easter and "run clever boys and girls, and remember me")
I would really like to see sempai begging for sex.. because every time it seems that is only morinaga wanting it. Even in this last chapter, senpai said "no"... but morinaga did it... all of this is like a eternal rape scene, please end it!!!