“au where Arima and Eto were broken childhood lovers separated by the big bad organization and reunited again later as sworn enemies. In the middle of the battle, they reminisced their childhood where Eto asked Arima if they will ever live happily together. Arima just answered maybe yes, maybe not. But he promised, if it’s not in this life he’ll defo settled for her in the other lifetime” – There, some Arieto angst for your soul. Sorry my bad eng^^
The most scariest thing about your ask: Yesterday I was thinking a similar thing. – In another lifetime,where they may meet again Maybe this time,they can finally be together.