I’m looking for a BL comic(manwha whatever) where the main character world hops (or quick transmigrates) into the body of another guy and basically gets them a happy endings w their lover.

I remember there specifically being a world in a zombie apocalypse and the male lead in that world being a zombie (or half zombie thing) that was strong and being taken advantage of by a girl who betrayed the group.

Another work was a primitive one where the main character was small and cute like, and also had a harem. The main character also met another host (or world hopper) on her own mission and they talked a bit.

I also remember reading spoilers that the actual main character doesn’t end up with anyone and actually has a rather sad end where he like disappears or something. The main character never has any feelings attached to these characters he plays either.

Please reply if you know the name of this comic!