This dude really doesn't know that Maruto Fumiaki's magnum opus, the author of this work, is literally THIS:
Yes, that guy have just been raped by his ex crush, even though he's already engaged to another girl. And yes, with explicit sex scenes included —though they can be disabled in the All Ages version of the game.
Welcome, ladies and gentlemen, to the
KAZUSA NORMAL ROUTE in
WHITE ALBUM 2: CODA. If this disgusted you, believe me, you'll NEVER want to touch White Album 2 ever in the life.
You guys definitely don't know what you're getting yourselves into, dudes. Best of all, even Ai Kamiya in Shikimori-san did more NTR than this cheap rip-off where there's never been any real NTR—except, oddly enough, for Hikari's actions during her arc.