Tanaka Sei. A guy who look like and Angel offered Izumi to be his tutor because of a notebook that he found on his desk. And Izumi, a beautiful tall guy find it hard to believed that he's been offered by that job. And as the journey of student and tutor. Izumi slowly getting to know Sei's true self. And that is a waist addict who likes to cuddle, hug, kiss, and do lot of things on him. He's like a beast hidden with an Angel's face. The only disadvantage is that Sei was his height. Being on the level of Izumi's shoulder is a struggle for him. The both struggle on knowing how each other feel, especially the innocent Izumi who is gravely confused on why does Sei act that way in him. Being kissed, hug, touched by Sei as still an mystery for him. Cause it's definitely not normal for both men. On top of that, Sei is two years younger than him and only a third year highschool. What does this situation supposed to mean? ••• Expect typos and grammatical errors...