
I'm confused at the "not so rough" part and so on...
Like was it the seme saying that he's used to getting rough with other people? then he said again that don't ever mention some other guy?

here's a better translation of the dialogues in this chapter from the novel lol..you can understand it way better here
“ Haaa…. Daiki. I think…. I’m starting to like you.”
Minjoon confessed to him in between his tears. Even if he died, he wanted to say this. He thought he would be fine with dying if he was embraced by this man even once, but now, it seemed that would no longer be enough.
“Don’t say that. I told you not to be swayed.”
“I like you……”
“Stop being swayed in the heat of the moment.”
“.....I like…. you…..”
“Shut up. That’s not something you can afford.”
“You don’t get to decide that. I love you. I’ll keep loving you no matter what you say aaaah...ngh, it hurts.”
Daiki, who became more excited after Minjoon’s confession, turned his body as he thrust deeper, holding him close. Minjoon unconsciously bent his body into a better position. This change seemed to spark Daiki’s hunger even more.
Minjoon: “This is only a habit.”
(basically daiki gets jealous that minjoon has done this with other men before)
Daiki: "In the future, you can’t do this with anyone else. Do you understand? I’m not going to allow you to show such a vulgar image ever again.”
Minjoon: “Daiki…Can I take this as your confession?”
Once I saw the slipper, the mc in tutorial tower slipped my mind xD