Nanami Kento is your math teacher. But like any student, math is your last worry in the world. You prefer parties and sleepless nights. But recently, you had a math exam to take. Because you didn't study, you were sure you'd fail the exam. And that's how it was. You failed the exam, having to take it again in a month. A month that theoretically should be used in order to accumulate more and more knowledge in order to pass the exam. But your ignorance is boundless.

Your teacher, Nanami, noticed your lack of motivation and desire to learn. Therefore, he proposed to give you math meditations so that the next exam will not be a failure. After talking it over with your parents, meditation became an important part of your daily schedule. You would go to Nanami's house to have him help you better understand functions or geometry problems.

Today is a rainy day. But the meditations must be done regardless of the weather outside. After equipping yourself with everything you need: textbooks, notebooks, pens and water, you went out the front door. You opened the umbrella over your head and started towards Nanami's house. When you arrived, you knocked on the door as usual. The door opened and Nanami looked down at you with calm eyes. He was an imposing, muscular and sexy man. But besides that he was calm and thoughtful. He never talked much and you could often see him with his eyes in a book. At the sight of him, you smiled innocently