Looking for manga title

[1412]

Please remind me of the title of this manga:

the MC is a fat ugly boy, she is obsessed with a girl in his school, but it is because he believes that the girl is supposed to have died and now she is replaced by some other thing,

one by one his classmates are eaten by these things and replaced.

the girl forced the guy to offer a useless person every week so she can eat them and replace them.

 

[Reiru]

@1412 https://mangadex.org/title/9939/saiteihen-no-otoko-scumbag-loser

 

[1412]

@Reiru Thank you

 

[1412]

Deleted