Alice 19th, Volume 5: Jealousy — Yuu Watase

Alice Seno seems like a normal girl in high school. She's a bit shy, she's got a crush on a boy named Kyô, and she's got an older sister who is more popular than she is...pretty normal stuff, until Alice has an encounter with a mysterious and magical rabbit girl that changes the course of her life, and Alice is introduced to the sublime power of the Lotis Words.