Young Hiroaki struggled with the hardships of poverty. At that time, his mother, Michiyo, told him: "When you turn twenty, I'll grant you one wish. Until then, you must wait patiently." Years passed, and Hiroaki worked hard to support his family, gradually developing romantic feelings for Michiyo. When winter arrived and he turned twenty, Hiroaki confessed his wish to his mother: "I want to make love to you..." That single sentence would become the turning point that changed both their fates.