Honestly, I watched season 3 and found it a bit pointless. The reason for Usagi returning to this world still feels too vague and not very convincing, her motivation was weak, she put both her life and Arisu’s at risk, and she was never even sure she could make it back. As for the guy obsessed with death, if he truly wanted to experience it from the start, he could’ve just shot himself in the head. That said, it was still enjoyable to watch, and season 3 did give us a bit more insight into what this world actually is