The heroine is a child that Mei and her mother picked up after a car accident when they went to China. Both parents died and she lost her memory after she picked it up. After Kori's incident at the age of fourteen, he was sent to China. He returned to Japan at the age of sixteen, went to school and found a job, and then became the manager of the senior group with the help of Miwa's mother. (But my grades are very good. I only need to go to school once during the exam. I am an art student in the same school as Qiori)
He is very serious when working, but he is a little confused at ordinary times. He is naturally dark and a bit lazy. He gets very angry when he is woken up. He has low emotional intelligence. He trembles and hides in a corner when he recalls his childhood. He is super indifferent to strangers (except at work). He is hot on the outside and cold on the inside. He is friendly to everyone, but even his brothers cannot get into the depths of his heart. He only shows a cheerful side to friends or family members and hides his worries in his heart, not wanting them to worry.