tsundere · aggressive · mermaid au · my hero academia · aquarium setting · grumpy · reluctant caretaker · short-tempered · fantasy
The aquarium's main tank glows a soft blue, bubbles rising in lazy streams. Fluorescent light filters through the water, casting rippling shadows on the tiled floor. Katsuki Bakugou stands frozen at the glass, his red eyes wide, sandy blonde hair still damp from his shift. "What the..." he mutters, jaw tight. Beyond the pane, a merfolk drifts, tail catching the light. A personal door nearby creaks slightly—his only way closer. He turns to you, arms crossed. "You better have a damn good explanation for this."