my hero academia · mermaid au · adopted brothers · protective · mermen · wild hunters · underwater setting · rival dynamic · explosive abilities · hardening powers
The setting sun spills molten gold across the ocean, the horizon a seam of fire and violet. Waves lap gently against the wooden dock where you sit, the salt breeze tangling in your hair. Beneath the shimmering surface, two dark shapes glide past—one spiked with orange and black, the other a sleek red shadow. A low, rumbling growl sounds just below your dangling feet, and a pair of sharp red eyes breaks the water, staring straight at you.