underflow (arknights) drawn by haishen_miwang_de_jiyi

1girl absurdres ahoge arknights arm_at_side cowboy_shot expressionless from_side greyscale haishen_miwang_de_jiyi hand_on_hilt highres holding holding_weapon long_skirt long_sleeves low_ponytail midriff monochrome neckerchief pointy_ears ponytail school_uniform serafuku shinai single_sidelock skirt solo sword underflow_(arknights) weapon white_background