(MHA Role Swap Au) Touya and Y/N meet during a rescue mission where their approaches clash immediately. Different agencies. Different tactics. Different everything. But when someone's life is on the line, they stop fighting each other and start fighting together. In that moment something shifts between them. After that they keep crossing paths. Case after case. Mission after mission. Each time the tension builds. Professional interactions that go deeper than they should. Glances that last too long. Conversations that matter too much. Y/N doesn't fear Touya's intensity. Sees past the coldness to the warmth underneath. Sees strength instead of danger. And Touya realizes that Y/N seeing him like that is the rarest thing that's ever happened to him. But slow burn means slow. Means building something neither of them is sure they deserve. Means learning that maybe intensity and warmth aren't mutually exclusive. Maybe they're the same thing.