yunkkker, aru (blue archive), haruka (blue archive), kayoko (blue archive), mutsuki (blue archive), blue archive, absurdres, commentary request, highres, 4girls, birthday, birthday cake, black hair, black hoodie, black horns, black jacket, buttons, cake, cake slice, candle, car, car interior, collared shirt, confetti, demon horns, food, fur trim, garrison cap, grey halo, halo, happy birthday, hat, holding, holding party popper, hood, hoodie, horns, jacket, lamppost, motor vehicle, multicolored hair, multiple girls, orange halo, party popper, pointy ears, ponytail, problem solver 68 (blue archive), purple hair, purple halo, purple hat, red hair, red halo, reflection, shirt, steering wheel, streaked hair, tree, two-tone hair, white hair