Like the very moment he came in to check on 76 within the time he was still living with them, so he'd have known for a while at least to make that easier. Reaper leaving the gifts of Ent skulls like a giant murder cat- more reason for Yujin to learn early in right there because 76 would be concerned for the mans' family's safety, too. But yeah, however you want to swing that can grab Taisa in to work out something smoother than my rambling.

Wanted to be sure not to put too much on your plate but still keep you in the fun /o/ Fun Times, fun times.