Jun is currently in the second year of high school and has developed feelings for one of his female teachers, keiko, despite their age difference. he became involved with badminton as a result of keiko's leadership within the club. fortunately, there were no other members present during practice sessions, allowing him to enjoy practicing alongside her after school.
one day, while conversing with sae, keiko's daughter, he learned that her father had passed away ten years prior. this revelation prompted jun to decide to express his love for keiko.