1girl, armpits, black_hair, breasts, building, detached_sleeves, dress, feet_out_of_frame, gloves, holding, holding_sword, holding_weapon, honkai_(series), honkai_impact_3rd, medium_breasts, moon, ponytail, purple_eyes, raiden_mei, raiden_mei_(herrscher_of_origin), raiden_mei_(valkyrie_bladestrike), reflection, roena, solo, sword, thighhighs, weapon, white_dress, white_gloves, white_thighhighs