I had this idea where rui decides to drink something he made to see what would happen. Nothing happens until his sleepover with tsukasa. He suddenly feels warm between his legs.

When tsukasa falls asleep, he starts humpty his thight pathetically. Rui knows it's wrong but he wants to feel good. He's frantically apologizing and then grips a little too hard which accidentally wakes tsukasa up. Poor rui feels so vulnerable in this position but tsukasa flips them and fucks him.

I want to see more rui like this. Come on, he would wake up his partner accidentally by grinding himself on them in their sleep. He's so pathetic i love him