Isn't a Love Triangle Just Part of Everyday Life?

A NEET is reborn in a parallel-world Japan. Wait, this place seems to be a world of anime. And, well, he comes with an unreliable System called the Self-Destruction System, which is actually a Scumbag System. So, to keep this book from teaching kids bad habits, Fang Mo sets out to fight back against the System. Anyway, this is a pure-love story. Well! Just take it as the real thing.