shin (new), enemy naval mine (kancolle), gangut (kancolle), kantai collection, commentary request, commission, pixiv commission, 1girl, alternate costume, armpits, arms up, black hat, blush, bound, breasts, brown eyes, competition swimsuit, covered erect nipples, grey hair, hat, long hair, lying, medium breasts, nose blush, on back, one-piece swimsuit, open mouth, outline, red outline, restrained, sex, spread legs, swimsuit, tentacle sex, tentacles, tentacles under clothes, tongue, vaginal, water, wet