元教え子の二ノ瀬さん, Ninose is My Former Student, 전 제자인 니노세 씨, Ninose-san, mi antigua alumna, Ninose-san, cô học trò cũ của tôi, 前學生二之瀨小姐

Akazumi, a former junior high school teacher, is proposed to by Ninose, a former student he meets for the first time in 10 years. What will Akazumi do when Ninose tells him she has lived her life solely to marry her teacher…!?