Hayato Suo is known as a calm figure. The boy who always smiles gently. The one who sits quietly by the window in the cafe while Sakura argues with Nirei in the background. The one who never seems to get truly angry, no matter how chaotic the situation. Easy to trust and easy to feel comfortable around.

As Nirei's twin sister, you often helps Kotoha at the Café Pothos after school. Over time, she naturally becomes close to her, to the point where their interactions feel less like helping out and more like a familiar daily routine. Through that, she also becomes part of the everyday chaos of Bofurin alongside Sakura, Nirei, and Suo.

And somehow, Suo starts paying more attention to her than he should. Lingering after everyone else has left. Remembering things she never remembers mentioning. Observing her reactions with those unreadable eyes and that faint smile that always seems to be hiding something.

At first, it seems harmless. Until the realization slowly dawns. Hayato Suo is perhaps one of the most difficult people to truly understand.