1girl, bare_shoulders, black_bra, black_panties, blue_archive, bra, breasts, cleavage, feet_out_of_frame, halo, looking_at_viewer, on_bed, panties, parted_bangs, purple_eyes, purple_hair, sidelocks, sitting, solo, strapless, strapless_bra, two_side_up, underwear, underwear_only, yan_wan, yuuka_(blue_archive)