Most people that dropped this did it so because not everyone is heterosexual in this manga.
So weird to deprive yourself from good art and writing for that.
Boy mc gets girl mc pregnant, turns into a hiruko and dies. It ends on some meditation on the fleeting beauty of life in the face of inevitable death as she stares off wistfully into the distance with her hand on her belly. Okay either that or she's holding hands with the kid after a timeskip, or dead but the kid's still alive, but those are just variations on the same thing.
Okay maybe that was kinda 3 predictions, but I'm definitely right about the first part. Hope the author subverts my shitty expectations lmao.