Hayaku Otona ni Narinasai.

Hayaku Otona ni Narinasai.

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はやく大人になりなさい。

Nao is a second-year high school student who believes nothing good comes from adults and wants to remain a child forever. Her perspective begins to shift when she encounters Mikasa, her handsome and mysterious biology teacher.

Through their interactions, Nao starts to learn more about the adult world, including its complexities and emotions. As her curiosity grows, she finds herself drawn into a romantic comedy that explores the boundaries between youth and maturity.

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