Nasu to Altair

Mitsuo, a 16-year-old high school student, lives with his stepmother following his father's death. His stepmother, Minato, is 31 and was previously his father's student. Her cuteness causes Mitsuo discomfort due to his sensitivity to overly adorable things. At school, a stern girl named Kitou attempts to connect with him in an awkward manner. Mitsuo's everyday life is shaped by these relationships and interactions with other classmates.