Nico-Nico-Nii!

A young girl with black pigtails and a green bow tie wears a pink cardigan and a party hat, raising her right hand in a celebratory gesture while holding a cup, her expression shifting from a smile to a winking pose; the scene cuts to her in a white maid outfit with a black apron, standing behind vertical bars with a city skyline in the background, raising both hands above her head with a joyful expression, then returns to the classroom setting where she continues to wave and smile, before the scene changes to her in a dark blue blazer, still with pigtails and a green bow tie, performing a sal