den, kagamine len, kagamine rin, kaito (vocaloid), vocaloid, 1girl, 2boys, black leg warmers, blonde hair, blue eyes, blue hair, blue scarf, blush, bow, bow headband, coat, detached sleeves, grin, hair ornament, hairclip, headphones, headset, leg warmers, long sleeves, multiple boys, neckerchief, necktie, open mouth, ponytail, puffy sleeves, scarf, short hair, short ponytail, shorts, sleeveless, smile, sweatdrop, white coat, yellow nails, yellow neckerchief, yellow necktie