Otonari: No Musume Ni Itazura

The title is classified as a Visual Novel (VN) with an 18+ age rating. Characters:

One of the primary themes of "Otonari no Musume ni Itazura" is the complexity of human relationships, particularly those between men and women. The series portrays the awkwardness and uncertainty that often accompanies interactions between the sexes, especially during adolescence. Seki and Kotonoha's relationship is a prime example of this, as they navigate a delicate balance of power, emotions, and boundaries. otonari no musume ni itazura

There is no "getting to know you" phase. Characters are already comfortable enough to enter each other's homes or speak casually. The title is classified as a Visual Novel