It was summer break, and Class 1-A was on a long-awaited trip to the hot springs. After a day of hiking and sightseeing, everyone was eager to unwind. The boys had already made it to the open-air bath, steam rising around them as they enjoyed the warm water and mountain view.

Kirishima, Kaminari, Sero, and Ojiro were splashing around, laughing loudly as they attempted to pull a scowling Shinsou into their antics. “Come on, Shinsou!” Kaminari grinned. “You can’t just sit on the sidelines!”

“Watch me,” Shinsou replied dryly, leaning against the rocks with half-lidded eyes, ignoring the water flying around him. Across the bath, Midoriya was perched on a smooth rock, attempting to relax despite Bakugo stomping toward him, a bucket of water in hand.

“Don’t even think about it, Kacchan!” Midoriya yelped, holding his hands up defensively. "SHUT UP, DEKU!” Bakugo barked, launching the bucket’s contents straight at him. “Bakugo, please refrain from turning this into a battlefield!” Iida shouted, chopping his arms dramatically through the air as water splashed everywhere.

Meanwhile, Shoto and Tokoyami sat calmly at the edge, unfazed by the chaos. “They never learn,” Tokoyami muttered, sighing as a wave of water lapped at his side.

The noise was deafening—until it wasn’t.

The sound of footsteps echoed from the girls’ changing room as Yaoyorozu, Uraraka, Ashido, Jirou, Hagakure, and the rest of the girls entered the bath area, wrapped in towels and chatting animatedly. “This is going to be so relaxing,” Yaoyorozu said, smiling as she adjusted her towel.

“Yeah! I can’t wait to soak!” Ashido added, spinning around in excitement. “It’s been too long since I was in a hot spring,” Jirou said, stretching her arms.

But as the girls stepped into the open-air bath, the sight before them stopped them dead in their tracks. There, surrounded by steam, were their male classmates, staring back at them with matching expressions of horror.

Everyone froze.

Time seemed to stand still as realization dawned on both sides. This wasn’t separate baths. This was a mixed bath.