[It's mostly alarming that Akechi hasn't heard of him. Maybe he's dead, killed by one of Shido's more mundane accomplices. That would fit. Wakaba was set up the way she was because she had family who would have looked into the matter otherwise, after all.]

That would do it. He was wary of the Kirijo Group in my world, all the more so when I discovered that Mitsuru didn't exist in Mementos at all.

[At the time, he'd thought she was just too far out of range - it's not as though she spends all her time in Tokyo, much less the center of it. But now... Well, an issue for later.][