Episode 1: The story is about a brother and his younger sister Kasumi. Kasumi is a NEET, who wants nothing more than to fuck her brother silly. Episode 2: Chinatsu is a tsundere who has problems expressing herself. Luckily, our hero, Sahara is able to help bring out Chinatsu's supressed emotions. Episode 3: Is the story of Makoto and Kouichi, who happen to be completely immune to the Westermarck effect. Lucky them.