連れ子のいる男性と結婚し、三人で暮らし始めたあやの。夫の連れ子・啓介との仲は悪くなかったが、母親としての距離を縮められずにいた。そんなある日、啓介は学校から神妙な面持ちで帰ってきた。そして心配するあやのに「キスの仕方を教えて欲しい」とせがんだのだ。どうやら女性関係で失敗をしたらしい。一度はその頼みを断ったあやのだが、子供の悩みを解決するのが親の役目と決心し、「お母さんが、大人の接吻を教えてあげる」と啓介を優しく導いて…。

Ayano married a man with a ***** from a previous marriage, and the three of them began living together. While she had a good relationship with her husband's son, Keisuke, she struggled to bridge the gap as a mother. One day, Keisuke returned home from school with a serious expression. He then begged Ayano, who was worried about him, to teach him how to kiss. It seemed he had made a mistake with a woman. Ayano initially refused, but then decided that it was a parent's duty to help their *****, and gently guided Keisuke, saying, "Mommy will teach you how to kiss like an adult…"