Aina Kuronuma

黒沼 あいな

A female student in Sakamoto's class who falls for him. She is very popular among boys but has no interest for anyone else except Sakamoto, which makes her disliked by other girls. She charms the boys to do her bidding by making them fall in love with her through 'love lessons,' which turned out to be totally invalid to Sakamoto.
After Sakamoto announced his departure to America, Aina announced her dream to become Japan's top model and win Sakamoto's affection while trying to throw a cream pie at the former before he evades.