1girl, against glass, alternate costume, areola slip, bathroom, bikini, blue hair, blush, breast press, breasts, c (theta), cleavage, collarbone, covered nipples, dark blue hair, groin, heart, idolmaster, idolmaster million live!, invisible wall, large breasts, looking at viewer, navel, no panties, out-of-frame censoring, short hair, solo, stomach, swimsuit, toyokawa fuka, upper body, water drop, wavy hair, white bikini