What Do I Do When the Devoted Lover System Binds to the Wrong Person?

Yu Jinchou is inexplicably transmigrated into a harem novel as a minor villain, the bottom whom everyone wants. He finally manages to follow the plot, and he only needs to die at the end to go home.

Then a devoted-lover System drops out of the sky and binds itself to the tool character, a male supporting character who was supposed to kill him.

As a result, he can't reach the final death scene he needs to ascend for a long, long time. And now he's got a devoted-lover yandere trailing behind him, often going crazy and looking like he'd love to bite him to death.

Then things start getting more and more wrong.

Yu Jinchou: Wait, hold on. First top, you know the person who saved you back then wasn't the little harem bottom? Then why are you so good to him?

Yu Jinchou: Bro, calm down. Your love interest is over there. Weren't you going to kick me out of the house and remove me from the family register for his sake? What do you mean, this means we can get married?

Yu Jinchou: The little, delicate bottom must just be panicking because everyone around him suddenly changed their attitude. He can't have any other intentions... right?

After drugging the water, the "little, delicate bottom" gently strokes the sleeping man's face. "You wanted so badly to go home before, so I could only fulfill your wish. Besides, I didn't like those people getting close to you... But now you can't go back, can you?"

The desperate male supporting character, bound to the devoted-lover System: Whoever wants to be this yandere's lover can... Uh, I guess I could do it? Wait, why are there so many people competing with me?!!!

--

System: Host, actually, if you earn enough points, I can have a physical body too.

Yu Jinchou: ...Huh?

Fragmented top x beloved-by-everyone bottom. I'll add more if I think of anything.

[Synopsis screenshot saved]

Theme: Be your own light, and others will follow.