1girl, ;o, ahoge, alternate costume, bangs, black hair, black panties, blunt bangs, blush, braid, collarbone, happy birthday, idolmaster, idolmaster shiny colors, mayuzumi fuyuko, no pants, one eye closed, pajamas, panties, polka dot, polka dot pajamas, sikimosh, simple background, sleep bubble, sleepy, solo, twin braids, twintails, underwear