K-on resonance

A series of anime characters are shown in quick succession, each displaying a distinct expression or action: a girl with brown hair and a white scarf looks forward, a character with a rainbow-colored effect moves across a rocky background, a girl with dark hair looks down, a girl with dark hair and a red mark on her face looks up, a girl with brown hair looks to the side, and a character with blonde hair is seen from behind. The scenes transition rapidly between different settings, including a dark rocky area, an indoor space, and a balcony with a view.