aris (blue archive), blue archive, commentary, highres, 1girl, absurdly long hair, aqua halo, beamed sixteenth notes, black hair, black skirt, blue necktie, blush, closed eyes, eighth note, full body, hair between eyes, halo, jacket, ken (houndscombat), long hair, long hair between eyes, long sleeves, millennium science school logo, multicolored jacket, musical note, necktie, one side up, open mouth, pleated skirt, railgun, rectangular halo, shirt, singing, skirt, smile, solo, teeth, two-tone jacket, upper teeth only, very long hair, walking, white shirt