eibon, akiha rumiho, science adventure, steins;gate, absurdres, commentary request, highres, 1girl, animal ear hairband, animal ears, bare shoulders, blush, breasts, cat ears, cleavage, collar, covered navel, detached collar, drill hair, fake animal ears, frilled collar, frills, greyscale, hairband, innertube, long hair, looking at viewer, maid headdress, medium breasts, monochrome, one-piece swimsuit, school swimsuit, simple background, smile, solo, swim ring, swimsuit, tsurime, twin drills, twintails