Heimr huffs, but it sounds more like a laugh.

"Son, I'm a single father. I do nothin' but worry."

After a moment, he gently ruffles Mizuki's hair.

"You alone, huh? ... Depend on the others, too. Work together. You're all so much stronger than we were. ... I'm sorry I can't tell you more yet. I'm just- I'm not ready."