1girl, arm_rest, arm_support, armchair, balloon, box, chair, crossed_legs, detached_sleeves, dress, gift, gift_box, glasses, haerge, hair_over_one_eye, hand_on_own_cheek, hand_on_own_face, happy_birthday, honkai_(series), honkai_impact_3rd, leaning_forward, long_hair, red_eyes, rita_rossweisse, short_hair, sitting, smile, solo