Can I Outheal the Brother Who Made Me?

Minato wakes on a cold floor with medicine on his tongue and panic in his chest. His body is weak. His breath is short. His new life belongs to a mountain academy where the powerful look through him like smoke. He survives by noticing what other people miss. A trembling finger. A hidden bruise. A lie in the way someone thanks him. That skill keeps him useful, which keeps him alive. Then the work starts. Minor fevers, poison headaches, bad cuts, sleepless nights. Each case is small, but every one pulls him closer to the same man who seems to know him too well. Rei watches him like an older brother who already learned every move he might make. Minato also carries one broken edge from his old w...