Hiroase unknown (Matsujima Ceiko) loses his enthusiasm for the position of teacher, while Guang (Hideaki Kurosawa) is strictly required to inherit the hospital family business by his mother's mirror (Kuroki pupil). The first time they met was when each other's lives were desperate. At that time, I only wanted to marry my fiance in order to escape everything at school and quit my job as a teacher. And at this time, the light into the unknown class, light was trying to escape from the shackles of his mother's mirror, for this worry. The pure light, which seems to break at a touch, strongly attracts the unknown, and the light has the same feelings for the unknown. Unknown at the beginning of their acquaintance, because of her relationship with teachers and students, she could only desperately suppress her love, but because of her unreserved and brave love for the unknown, the unknown could no longer be silenced, and her doubts and fears were swept away. However, there is constant pressure from all walks of life, and their own running-in is always inappropriate, and the two have experienced many on-off and on-off in the difficult experience and environment. Can this shocking teacher-student relationship be recognized by the people around you? Can they finally move towards happiness?