okay i didn't finish reading it yet but the comments are saying that they feel like that's not a ending sooo i found the source of it and turns out it has more than 57 chapters!! anyways here's the link https://www.lezhin.com/en/comic/attheend it actually ends at 57 chapters but it has a few side stories.
the link is in there but here https://www.lezhin.com/en/comic/attheend
ok tbh i think this was a little too quick ╥﹏╥ they was just talking, then out off no where he picks him up then says "we are gonna do it in bed" idk just my opinion