Best girl Jindou not only lost but is dead, Ayumi cucked Rei twice and now he's raising two kids that obviously ain't his (DNA test? C'mon dude it's pretty damn obvious, the "she just looks like Jindou cuz emotional reasons" doesn't hold up when there's two of them... Jindou only needed to be reincarnated once so second means cheating), and Tenshi as bad as she was is also dead. And the cute girl now is a free loading alcoholic which is portrayed as "cute" and not a serious issue instead of having a family and continuing her tribe.
On top of that Rei can never tell Ayumi any of the crap the happened because she'd get survivors guilt 2.0 Jindou Style, etc.
Great work author, 10/10 ending.