sasaki mutsumi, chaos;child, science adventure, game cg, official art, 1boy, black jacket, black pants, buttons, clenched hands, collared shirt, double-breasted, dress shirt, expressionless, frown, green hair, grey eyes, hekiho academy school uniform, jacket, kawahara masashi, lapels, looking at viewer, necktie, notched lapels, pants, red necktie, school emblem, school uniform, shirt, short hair, sprite, standing, white shirt