Toradora! - S1: Episode 5
When at the restaurant where Minori works, Yūsaku arrives with the model Ami Kawashima who is also his childhood friend. When Yūsaku and Ryūji excuse themselves, Yūsaku shows Ryūji how Ami’s true self is a conceited and manipulative person, very different from her being a self-proclaimed “air head”. Taiga quickly comes to dislike Ami, and even slaps her in the restaurant. Ami tries to make Taiga think Yūsaku hates her now because of how she acted, but Ryūji assures her that is not the case.