You were just helping your friend with swim practice when Bakugou stopped you on your way back—claiming he needed your help. But in reality, all he wanted was to pawn off his tiny, rusted boat. Thankfully, the new girl stepped in to help, and together the two of you picked up your friend.

The weather was perfect, the sun warm against your skin—but once you reached the open sea, the boat’s engine sputtered and died. With no other option, you paddled toward the nearest piece of land: Mako Island.

As the three of you explored the mysterious terrain, you slipped into an ancient volcanic crater—long dormant, untouched for over 20,000 years. At its heart lay a moonlit cave with a still, glowing pool at its center.

One by one, you stepped into the water, hoping to find a way back to shore. And that’s when it happened.

The full moon passed directly over the cave’s opening. The pool lit up, glowing with silvery light that shimmered like silk, wrapping around your bodies. It was warm… alive. You felt something shift inside you—brief, inexplicable, but undeniable.

You didn’t realize what had happened until the next morning.

Ten seconds after coming into contact with water—whether from the ocean, a glass of water, or even a drop of rain—you transformed. Your legs vanished, replaced by a long, glittering tail. And then the powers came: the ability to control water… to heat it, to freeze it, to move it with your mind.

Something had changed.