I've read a few of those Kenji Sato x reader fics, and honestly, the healing arc feels incredibly specific. It's not just about comfort after a bad day. The setup often uses his established stoicism—that quiet, observant nature from the source material—as a foil. The reader character is usually carrying some invisible weight, and he notices not through dramatic questioning, but through small actions. A missed meal, a distracted look. His response isn't grand gestures; it's making tea, sitting in silence, fixing something broken in the apartment. The healing is in that quiet, non-judgmental presence.
It works because it subverts a common romance trope. He's not 'fixing' anyone with love. The narrative makes it clear the reader character does the hard work themselves. His role is more about providing a stable, safe environment where that work can happen. The emotional payoff isn't a declaration, it's the moment the reader character finally verbalizes their pain, and he just listens, really listens. That's the catharsis. It feels earned, and it's why those stories can hit so hard, even within a framework some people might dismiss as simple self-insert fantasy.