tape gag, multiple girls, 2girls, kafuu chino, rabbit house uniform, thighhighs, bound, improvised gag, gagged, gag, hibiki (kancolle), tape, bdsm, bondage, long hair, blue eyes, rope, skirt, crossover, x hair ornament, school uniform, hair ornament, socks, sitting, shibari, restrained, shibari over clothes, grey hair, arms behind back, black skirt, serafuku, blue hair, bound legs, black thighhighs, no shoes, dual persona, neckerchief, zettai ryouiki, bound arms, vest, shirt, small breasts, long sleeves, bow, indoors, blue bow, hairclip, white shirt, no headwear, blue vest, breasts, white socks, white hair, kneehighs, blush