Osananajimi ga Mama sugite Tsurai

Hina has unrequited feelings for her childhood friend Yakumo, who behaves more like an overprotective parent than a potential romantic partner. While she enjoys the attention, she finds it frustrating to be treated like a child rather than a romantic interest. Hina makes efforts to be seen as an adult by Yakumo, but her attempts lead to comedic situations. The story follows their dynamic as Hina pursues a romantic relationship with someone who refuses to see her beyond childhood.