Two high school gyaru, the bubbly blonde Yua and the cool tan beauty Reina, make a spontaneous decision to date each other for a year simply for the vibes. What begins as a casual experiment quickly unfolds into a heart-thumping journey through the daily life of a pre-established couple, skipping the usual romantic buildup to focus on the genuine and honest dynamic of their relationship. The story follows Yua and Reina as they navigate typical high school experiences together, going on dates, celebrating birthdays and holidays, and even becoming the spring festival mascots for their class where they run a maid café. The first chapter alone compresses a full year of their relationship into a rapid introduction, showing them complete their year-long experiment very much still in love.

The central dynamic is a classic comedy pairing. Yua is the enthusiastic and openly expressive half who constantly gushes about her affection for Reina in a way that disarms any potential judgment from others. Reina serves as the straight man, calmly rolling with or gently reining in Yua’s more outlandish flights of fancy, though she also demonstrates emotional vulnerability and honesty in her own communication. The setting is a modern Japanese high school where the couple encounters no significant opposition to their openly queer relationship. A supporting cast helps round out the world, including a pair of twins named Akane and Shion, and Yua’s head-empty childhood friend Yazawa, a rocker chick who tends to dominate the air whenever she appears. The narrative focuses on slice-of-life comedy and the exploration of an already established romance, using recurring off-brand Instagram posts and a strong sense of fashion as recurring visual and thematic elements.