birchboat, greyy (arknights), greyy the lightningbearer (arknights), arknights, absurdres, highres, !, 1boy, animal ears, bdsm, black socks, bondage, bound, bound wrists, brown jacket, brown pants, cuffs, dog boy, dog ears, dog tail, goggles, goggles around neck, jacket, no shoes, pants, parted lips, shackles, short-sleeved jacket, short sleeves, socks, surprised, tail, teeth, tickling, tickling feet, tube, upper teeth only, yellow eyes