I don't think it's asspulling and I think it was "hinted" before the ending
1. People dying everyday why is Mei only saw Kahara and Mit-tan?
2.Mei's dad outright say "ghost aren't real" since the beginning
3.Kahara "sleeping" while being a ghost
4.Mei saw Taku's "ghost" even when it turned out that he was alive and well
5.Like other people said, Kenta kicking memorial, Kahara slowly regain pain even when he was a "ghost" etc.
however it's badly execute and the idea that parents would lie about their child's dead is kinda dumb
1. People dying everyday why is Mei only saw Kahara and Mit-tan?
2.Mei's dad outright say "ghost aren't real" since the beginning
3.Kahara "sleeping" while being a ghost
4.Mei saw Taku's "ghost" even when it turned out that he was alive and well
5.Like other people said, Kenta kicking memorial, Kahara slowly regain pain even when he was a "ghost" etc.
however it's badly execute and the idea that parents would lie about their child's dead is kinda dumb