Reina Aharen, a small and cute student with a quiet voice, is quite bad at determining distance and personal space. Sometimes she's inches away from your face, and at other times, miles too far! The only one who tries to understand her antics is Raidou Matsuboshi, who is seated beside her in class. He has a menacing face, but in reality, he is a kind boy with an imagination that can run wild at times. Aharen-san wa Hakarenai follows the peculiar pair as their odd friendship starts to blossom when Raidou picks up Aharen's eraser for her. She misinterprets his gesture and now believes them to be best friends, showing how the simplest of things can prove to be the most complicated of challenges for them.

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