The peach blossoms shine brightly. When the son returns home, it is suitable for his family.
Although this sentence refers to a woman getting married, he also likes her very much. He also married that person when the peach blossoms were in full bloom.
Ritsu Nagakiyo was originally a humble actor, but he was lucky enough to be liked by that person, so no matter how long he had to wait, he would always stay where he was and wait for her to come back.