This question just suddenly popped into my head but I wonder, if arima really died, wouldn't koori ui be pretty lonely? I mean he's closer to arima and hairu, and since hairu is dead, and if arima dies, then what? I know he drinks with hirako too but it dosen't seem like he's talking to him or what, just ranting. But idk tbh. There's fura too but...
(Sorry to the people who seen this like 5 times I'm really sorry I just wanted to post this everywhere for no good reason no wait please care for koori)