lips

A dark-haired anime character with glowing red eyes appears in profile, then turns to face the viewer with a wide, unsettling grin, revealing sharp teeth, before the scene cuts to a blue-haired character in a school uniform looking back with a serious expression, followed by a close-up of the dark-haired character's face with glowing red eyes, and finally a full shot of the dark-haired character in a dark environment with a red light streaking behind them.