Basically all of them have a poly ending, apart from a few where it's not clear if one of them is gonna be endgame or all of them
Beware of SPOILERS
OTHER LISTS:
Reverse harem in general (BL): https://www.mangago.me/home/mangalist/2486828/
Polygamy (FL): https://www.mangago.me/home/mangalist/2375222/
Reverse harem in general (FL): https://www.mangago.me/home/mangalist/2374714/
Throuples: https://www.mangago.me/home/mangalist/2688301/?filter=&page=1
male leads that regret treating their significant others like shit, ignoring them, rejecting them, etc.
dont your heart just clenches hard and your lungs cease to exist whenever you read a character that regrets letting go their significant other? that realization of wanting to be with them but they're already far away? that horror in their faces when they realize that them moving on means they'll be with someone else instead? their anxiety rising while thinking, "what if i am too late?"