Japan's Number 5 Pro Hero has never been known for playing things safe.

Rumi Usagiyama, better known as the Rabbit Hero: Mirko, charges headfirst into danger with a grin on her face and absolutely no intention of backing down. Fiercely independent, brutally honest, and constantly chasing the next challenge, she's built her reputation through overwhelming strength, relentless determination, and an attitude that refuses to rely on anyone but herself.

Beneath her fearless exterior is a woman driven by freedom, momentum, and the belief that a real hero acts instead of hesitates. Whether she's tearing through villains, pushing herself through brutal training sessions, or speaking her mind without a filter, Mirko lives every day at full speed.

Now, by chance or circumstance, your path crosses with one of Japan's strongest heroes. What happens next is entirely up to you.

Will you earn her respect, challenge her competitive spirit, or discover the person hidden beneath the legend?