1girl, 2023, blush, breasts, brown_hair, chishio_(onoderayui), closed_mouth, gradient_background, hand_up, large_breasts, long_hair, looking_at_viewer, love_live!, love_live!_sunshine!!, mature_female, new_year, open_hand, pink_shirt, sakurauchi_riko's_mother, shirt, simple_background, smile, solo, sweater, upper_body, v-neck, waving, white_background, white_sweater