1girl, arknights, artist_name, bare_shoulders, black_headwear, blush, braid, dated, finger_to_own_chin, green_eyes, hair_between_eyes, happy_birthday, heart, looking_at_viewer, may_(arknights), pink_hair, rryy, shirt, short_hair_with_long_locks, sleeveless, sleeveless_shirt, solo, twin_braids, white_shirt