Got it in one. The "Tenshi" is from Tenshouin, but it's also just fitting. Angels aren't all light and beauty, y'know. They're cruel and violent things that kill rather a lot, in the Bible. Shu said so.

[ He was curious about it - how much did Hiyori notice and think was the same, subconciously? He kept talking about the same kind of loneliness, and similar situations, and Leo wanted to know in the way his attention sometimes catches on this or that. ]

But if you've already done that, it's fine to tell you how I scared Hiyo. I told him that my suit never got that bad to worry about because I'd only ever gotten to the point of asking to be hurt here, not killed. I think I scared the hell out of him, even though I actually meant it to be comforting, 'cause he got way more frantic about introducing you to me after that.

[ The smile shifts to something softer. ]

Sometimes I mess up and scare the people who care about me. Do you do that?