1girl, d, bare_arms, bare_shoulders, bed_sheet, blonde_hair, bra, breasts, dr_rex, frilled_bra, frilled_panties, frills, groin, gun, handgun, head_out_of_frame, holding, holding_gun, holding_weapon, lycoris_recoil, lying, m1911, medium_breasts, navel, nishikigi_chisato, on_back, panties, red_bra, red_panties, short_hair, smile, solo, underwear, underwear_only, weapon