Masashi's heart was deeply shaken upon discovering his mother's relationship with her boyfriend. Having grown up in a single-parent household, he harbored strong dependency toward his mother, and this incident became the trigger for his suppressed emotions to erupt. Consumed by jealousy and rage, he fiercely condemned the relationship between his mother and her boyfriend, ultimately leading to their breakup. A deep rift formed between mother and son, but Masashi struggled to honestly express his true feelings. Gradually, his profound affection for his mother began to surface, evolving into a forbidden relationship. The story unfolds the turbulent interplay of love, jealousy, and familial bonds as they are challenged, broken, and ultimately redefined.