She and her friends wrote "Tsukushi Makino - only girl in her school who had two abortions" on their classroom's blackboard. Tsukushi did not witness them write it, but later saw them wiping away the words. They pretended to like Tsukushi and invited her to a party in Roppongi. At the party, they made fun of her clothes and treated her rudely, eventually revealing themselves.
Minako resembled her friend Yuriko in that they had similar facial features, height, and body shape. She usually wore a headband in hair, or otherwise wore it up into a bun. Her wardrobe outside of school was composed of name-brand clothing, including a Chanel suit.