Arisa remarried a man with a child, hoping to build a new family. Her stepson, Tomikazu, was a typical hikikomori youth, and Arisa worried about his future. One day, she happened to have a chance to talk with him and learned the reason behind his reclusive lifestyle. Feeling deep sympathy, she tried to comfort and care for him with warmth. However, their relationship took an unexpected turn. Forbidden feelings began to grow between Arisa and Tomikazu, leading to a passionate, taboo love whose fate awaits a gripping conclusion that will captivate readers.