rem from re_zero_kara_hajimeru_isekai_seikatsu and emilia from re_zero_kara_hajimeru_isekai_seikatsu, two female characters, rem on left with blue hair in a high ponytail wearing a black latex bodysuit and long black gloves, standing next to emilia who is hanging horizontally suspended in the air by intricate brown rope shibari patterns around her torso, thighs, and ankles, emilia with silver hair and elf ears completely naked, wearing a red ball gag with a collar, emilia's face flushed and sweating with tears streaming down her eyes while she grimaces and clinches her teeth, rem holding a black electric stimulator device against emilia's lower abdomen and buttocks, water droplets visible in the air, background is a gray stone dungeon room with metal bars on the window, dim blue lighting, sweat glistening on skin, detailed anime art style, fanart, explicit, nsfw