I think he didn't mean it in any other way than fixing his health. Like, before he'd put his own health and wellness first, but now, he'll put Dan's health and wellness first.
This might be a dumb question, but I few weeks/months ago I remember reading a creator's note were the manhwa artist was talking about going deaf because of stress and I can't remember the manhwa, so if anyone knows please let me know
Oomaeda and hanawa are so cute, I love how shameless they are at showing affection