"From now on, keep an eye on me, okay?" Ichinose Kaname and Aizawa Ryo are high school boys who live in the same dorm room and practice together after school despite belonging to different clubs . One day, Ryo is suddenly asked by Kaname to "protect him." Kaname says it's because the seniors in his dorm are teasing him too much, and Ryo accepts. However, when it comes down to it, Kaname has an even more serious agenda...