START-373 _Dad had an affair with my child's preschool teacher

Hikari, the kindergarten teacher loved by the children, and Akira's father fall into an extramarital relationship when his wife and son return home. They secretly met at home, immersed in days of unbridled passion. Hikari, despite being dedicated to her job as a preschool teacher (for children over 18 years old), carries loneliness in her heart, while her father is torn between emotions and responsibility. The secret meetings are even more intense, but also risky when his wife becomes suspicious. On the last day before his wife and Akira returned, Hikari suddenly came to him, leaving a big question mark about both of their futures. Hikari's loneliness pushes her into a spiral where her heart wavers against her reason, between morality and satisfying her emotions. Will she choose to face the truth or continue to hide in the dark secret? Where will Hikari's actions lead them in this taboo relationship?