I don't know how you guys think that the supernatural element was suddenly tacked on at the end. There ultimately was no explanation, I agree, but it was foreshadowed right at the start of the manga, not including all foreshadowing sprinkled through the story. It was teased with Igarashi's brother (who turned out to be his look-alike) peering through Taji's apartment where Igarashi's brother previously lived. It was also teased with the shrine where Ezaki was first discovered hinting at something religious. I'm pretty sure it was deliberate because you see Igarashi's brother's look-alike before the scene. Regarding the look-alike, of course, Igarashi eventually found out that that wasn't the case but when Kitou met with Tachibana when he was supposedly chasing someone tampering with police data it was as if it's explicitly stated already. Heck, even when Yanagami met Tachibana when she almost killed herself at the roof, it was already strongly hinted that there was some reincarnation shenanigans going on. The only mystery left at that point (regarding reincarnating) was whether or not it was only with Tachibana (because he was the only one "confirmed" to us readers that he had died already with the triplets bit the police were saying). Although, I thought it would be Omi who'd stop Yanagami from jumping on the roof because when it was shown to be Tachibana, the shrine with Ezaki was most likely to not have any reincarnation shenanigans, that it was only Tachibana that can actually revive.
The ending was definitely rushed though, could've explored some plot points. Also fuck the author for pussying out with Taji and Igarashi being a thing
@zawarudo
1. I agree, I don't even get the part where he cucked Taji but then he was this (fucked up) good guy all along? Maybe I just speedread that part, whatever
4. Because he was a malicious loose end, I think? Tachibana said that this was the first time that a believer (Oda) talked about God (Tachibana) in much detail to someone else (Ezaki). Or maybe it was for more personal reasons, since he apparently is bored of this whole immortality thing so he's now trying to do good with regards to Taji and AUN members. Seeing as how Ezaki fucked with every single one of them in a way, that could be a reason. I lean with the first one though.