Sausage.

A dark-haired girl with a red scarf is hugged from behind by a blonde girl with a blue bow, who smiles as the dark-haired girl reacts with a wide, open-mouthed expression; the scene shifts to a close-up of a character's leg, then to a side profile of a pink-haired girl in a school uniform, followed by a close-up of the blonde girl smiling, then the pink-haired girl in a dynamic pose with glowing effects, and finally the dark-haired girl in a white outfit sitting in water with a frog on her hand, all set in a traditional Japanese-style room and a natural outdoor environment.