The very idea that both could get a "bad/good" end where after going off to fuck others/harem your original partner might go yandere on you or the MC could act if they learn the partner did sounded so good tbh and had me looking forward to that idea.
Wish more games with multiple endings had that as a twist. Especially when there's netori/MC cheats.

(Always seems boring that if an LI cheats on MC they and the partner or a MC that cheats on an LI always gets total plot armor imo).