Ep. 3: Mahiro faces Nyaruko's advances, Kuuko's arrival, and Nyaruo's failed nightgaunt revenge.

Mahiro continues to endure Nyaruko's persistent flirting, adding to his daily troubles. The situation worsens when Cthugha transfers into their classroom under the nickname Kuuko, further increasing Mahiro's inconvenience. Meanwhile, Nyaruo, Nyaruko's hopeless older brother, attempts to seek revenge by sending nightgaunts against Mahiro. However, this retaliatory effort proves unsuccessful, leaving the threat unresolved. The episode focuses on Mahiro's ongoing struggle to maintain peace amidst these supernatural disturbances and unwanted attention from his classmates and Nyaruko's family members.

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