1girl, animal ears, animated, bangs, black hair, blue archive, blush, collar, covering mouth, dog ears, dog girl, dog tail, envelope, flying sweatdrops, goggles, goggles on head, hair bobbles, hair ornament, halo, heart, hibiki blue archive, holding, holding letter, jacket, letter, long hair, looking at viewer, looping animation, love letter, purple eyes, solo, tail, tail wagging, twintails, ugoira
1girl, animal ears, animated, bangs, black hair, blue archive, blush, collar, covering mouth, dog ears, dog girl, dog tail, envelope, flying sweatdrops, goggles, goggles on head, hair bobbles, hair ornament, halo, heart, hibiki (blue archive), holding, holding letter, jacket, jn 7 3, letter, long hair, looking at viewer, looping animation, love letter, purple eyes, solo, tail, tail wagging, twintails, ugoira