Komaru is confirmed to be able to see ghosts. So that's a thing in the DR verse that's probably unique to that family. Wouldn't it be bittersweet if Jin visited Naegi when he most doubts himself as Headmaster? Jin could encourage him and say he's doing a wonderful job, better than he himself ever did. And when he leaves, he could say "And tell my daughter… that I'm so proud of her…" (picture her saying through tears "well you can let him know… that I don't… need his approval…" *she breaks down*)
Oh my gosh my heart!!!!!