Osanazuma de Gomen!
幼な妻でごめんっ!
Manatsu Morisaki, an 18-year-old high school graduate, received a love confession from her teacher, Shinobu, who was 26 years old. After the confession, he proposed, and they married without having dated. Shinobu still treats Manatsu like a child despite their marriage. Manatsu, however, desires to be acknowledged and treated as his wife.