Mama wa Doukyuusei

ママは同級生

Following the early loss of his mother and with his father often away, Kisaragi Ryou frequently finds himself living alone. One morning, he stumbles upon a naked woman in his home but, unable to grasp what's happening, goes to school. Later that day, his father arrives with the intention of introducing Ryou to his future stepmother, revealing that the woman is actually one of his classmates.

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