The Betrayed and the Overlord

One Onimata Hiyota joined the Karasuno volleyball club in hopes of getting the ability to get close to the people on the team. After watching their games, she wants to have a chance to get with all of the players because of how attractive they are. But, unfortunately for her, Shoyo Hinata has already taken that spot for her. Jealousy flowing through her veins, she plans to ruin his life in hopes of turning everyone away from him. And luckily for her, she has an opportunity to do so since they were all invited to a month long training camp on a private island.

While successful in her plan, there's on little thing standing in her way that can screw everything up. Someone that looks exactly like Shoyo, and a shorter boy with a bad temper, could be her downfall. And from what it looks like, things took a huge turn for the worst.

All she can hope is that she doesn't die to either the Supreme Overlord or the Devil of Demise.