"Oh Hayato, you're in your room."
"What, Mom why would you think I wasn't?"
"AHHHHH HAYATO! YOUR COCK FEELS SO GOOOD!"
"...."
"But no really son, why are you in your room?"
Come on kid, I don't think you live in the city, so you should get to know your neighbours. What if you could have been living beside a cute childhood friend this whole time. Or a horny housewife. Or a pair of loli twins. The possibilities were literally endless, and you could have been having sex even sooner.
That's certainly a straightforward title.
I was kind of half expecting him to just barge in before actually confessing to her and finding out...But I guess this way works too.
...Great ending though! What will the neighbours think? Well...First of all it"s kind of etiquette to leave a young couple be while they"re making sweet love...And if the neighbours are a couple as well then hey, they"re probably getting it on too.
Hayato's illusions about Sakura being pure & innocent got broken conclusively ... an assertive AND horny-as-hell female protagonist is fine, too ... what will the neighbors think as she screams your name in (*cough-cough*) pleasure? - may range from: "How good it is to be young." up to: "You Lucky Bastard (GRR)!"