So many people misunderstood the "no punchline" line.
Usually in romance manga if they want to do it, there would always some comedy punchline that prevents them.
This time Hata-sensei directly said there is no punchline so they have sex off screen.
@LysandersTreason I'm glad I'm not the only one who likes his comments. He says what normal people would think and doesnt sugar coat it. Compared to some people on here he is extremely tame. Some spew hate at everyone and everything like it is going out of style and would make a Marine blush