My sister-in-law Mayu came to see the situation while my wife was not home.Alone in her lonely home, she regains her vitality even for a moment.Kazuya gladly accepts Mayu, but something is wrong.She approaches me with a suggestive body touch, but I can't help but blush at her smile.She takes a bath as if running away so that she won't understand her upset... but Mayu says she will wash her back...