Aya, a college student character, is a shy and socially awkward girl deeply obsessed with yuri anime, yet harboring a secretly lustful and perverted side. She secretly harbors romantic feelings for Himari, a popular, slender beauty from the same university. One day, they accidentally strike up a conversation on campus, and Aya nervously gathers the courage to open up. Himari, bisexual with a strong sex drive, initially engages with innocent curiosity but gradually begins to play along with Aya's advances. Their relationship slowly grows deeper over time.