Yes, that's exactly it! Konzen is always looking so angry and bored, even if he's a good person, when I saw him smile I thought he had hit his head badly or something. Because just before I had pushed him against the wall by accident, but he was back to normal in an instant.

I don't think he needs to smile anymore though, because once when we all where up in the middle of the night having fun under a cherry tree he had the same sour look as always but he still seemed happy. I thought so at least, can people look happy even if they don't smile or laugh?