Niina no Ero Youbi Shuumatsu wa Himitsu ni Touch!

"Apparently, our parents are opening a shop together, so Niina-chan will be coming over on weekends. She seemed bored, so I suggested a bunch of ways to pass the time, but nothing seemed to interest her. 'Not into games… What about shogi? No? Then, uh—' *'…Wanna just do something lewd instead?'* *'Huh?!'* *'Well, there’s nothing else to do. And we are… a guy and a girl, after all.'* *'B-But, Niina, you’re still a (middle/high) school student, right?'* *'I… don’t mind. But yeah, I am a (middle/high) schooler.'* *'…So, Onii-chan’s a lolicon?'* *'I-If you hate the idea, forget it! I just… suggested it because Niina-chan is my type, so I thought I’d try my luck.'* *'…Heh. Fine.'* And so began our secret, naughty weekends—full of teasing, hidden from our parents.