Citrus volume 5 features story and art by Saburouta.

Sister vs. Sister!

Step-sisters Yuzu and Mei have finally owned up to their feelings and started dating. But a new semester brings trouble in the form of Mitsuko, the former student council president. Mitsuko is determined to see troublemaker Yuzu expelled. She gives Yuzu an ultimatum: if Yuzu can beat Mei in the student council elections, she can stay. Can Yuzu find a way to win the election and hold onto her newfound romance?