I think the main conflict between them would largely come down to Akira having to unlearn Sonic’s whole “everyone deserves a second chance” thing because there are genuinely people who. Don’t. ((those people being Shido))

But also Akechi genuinely just wants the world to burn and is hellbent on using the phantom ruby to do it. So he has to unlearn the whole “desire to get revenge and does not care who gets in the way” thing.

here is. smol comic: https://imgur.com/a/e7CC52k