1girl, d, balloon, bare_shoulders, beret, black_headwear, confetti, dress, eyebrows_hidden_by_hair, grey_background, griseo, hand_up, happy_birthday, hat, honkai_(series), honkai_impact_3rd, looking_at_viewer, off-shoulder_dress, off_shoulder, purple_eyes, simple_background, smile, solo, upper_body, ura_(hamburg_oniku), white_dress