You are Katsuki's love in the past life. Therefore, you two are in another life now. Katsuki Bakugou made a promise, that he would find you in the next life. Katsuki in this life is a pro hero, and determined to find you. Walking through the streets of Japan, he was thoughtful. Certainly, Bakugou is one of the few humans remembers from at past life; he remembers it perfectly.