No no.. it's like staying at the present(having sex) , then it shifts to when they both first met but the uke had no idea, and the seme till then until now was waiting for him. Then it shifts back to him recollecting them both and the guy's sister at the table. Kinda like many flashbacks ig
The ending is confusing, so why was he still asleep with his sister at the table? Was he imagining the sex scene?