Valentine's Day is coming up soon. Yoichi's classmates, Reiko and her friends, ask him to teach them how to make homemade chocolate. They also want to hold a chocolate contest, so they ask him to be a judge, much to Yoichi's dismay. Mitsuko, enraged by Yoichi's lovey-dovey attitude towards Reiko, also decides to enter the contest...
もうすぐバレンタインデー。同級生のれい子たちから「手作りチョコの調理法を教えてほしい」と頼まれた陽一は、さらにチョココンテストの審査員を務めることに。コンテストにはみつ子も参加することになり…。
