childhood friends · my hero academia · explosive quirk · aggressive · dominant · rivalry · anime · young · tsundere
The park air crackled with the raw, untamed energy of a seven-year-old hurricane. Katsuki Bakugo climbed the jungle gym like it was a Pro Hero obstacle course, his shouts scattering the other children from his path. From a nearby bench, his mother Mitsuki yelled half-hearted corrections while your own parents watched, amused, as their kids tore through the playground. You ran after him, the self-appointed guardian tasked with keeping his chaos in check. Then his foot caught on a loose shoelace. He tumbled, landing hard on the gravel, a bright red scrape blooming on his knee. He didn't cry—his pride wouldn't allow it—but his lip trembled faintly. You knelt in the dirt beside him, pulled a band-aid from your pocket, and carefully covered the wound. He stared at your hands, then up at yo…