Chapter 1: Day 1

When people meet their soulmate, their power gets switched for a good week. You and your soulmate swap superpowers and you get stuck with a stranger's weird abilities for 168 hours. That's enough time to ruin whatever life you've built up or even end up killed. Tsukishima knows. He's done the math.

He never wanted to meet his soulmate.

or: Soulmate power swap AU with gay volleyboys