[He'd apologise if he knew Basch thought it was embarrassing, but without that key piece it just makes him smile warmly. The weight over him is pleasant and comforting, after all, easy to nestle into as he loves to do.]

Mm, alterations, yes. I've never made one for a tail specifically, but I've seen them on a few yokai before. It shouldn't be too difficult to add a button and a hole for the tail.