A diminutive pink creature orbiting in space named “Kirby” crash lands into Dream Land. Once getting acquainted with the citizens who live there in Cappy Town, he begins to defend the town from the monsters that King Dedede, the self-proclaimed ruler of Cappy Town, orders from the evil Nightmare Enterprises.

Wataru Minakami was at the top of his class in middle school and had a pretty comfy life. But, when he unexpectedly fails his only high school entrance exam because of a computer glitch, his life is suddenly thrown into utter chaos! Jeeves, Wataru's trusted butler, sends him off to attend school on a mysterious island. Upon his arrival, Wataru. encounters many friendly, cute girls. This isn't a problem until he finds out they are all his sisters! For most kids, adjusting to life at a new school in a different town is tough enough. But for Wataru Minakami, high school will be the easy part!

An evil politician Arimiya Kamoshige has been a local governor for 40 years. Abusing his power, he has gained wealth and women. The protagonist's father had managed Arimiya's black money as a right-hand person, but later, he was expelled falsely charged with a crime. He got discouraged and called his runaway son, Tatsuya. He asked Tatsuya to take revenge on Kamoshige. Soon after his father died. Kamoshige hired Tatsuya as the third secretary. However, Kamoshige also dies 3 months later. Just before his death, he changed the passcode of a safebox which contains hidden black money. Then, the power balance of Arimiya Family changes. The person who obtains the hidden money will become the next ruler. While Arimiya Family is in conflict for the hidden money, Tatsuya begins his revenge. (These OVA's are based on the erotic game by Silky's.)

Akira's father, an archeologist, has remarried, giving him a new stepmother and three stepsisters, Yuki, Nana and Miu. While on his honeymoon, Akira's father makes an archeological find and decides to stay on site in order to supervise and leaving Akira at home alone with his new family members. After being discovered in bed with Yukie, his stepmother, Akira finds a box containing a scroll and three bottles. Using the knowledge his father taught to him, he reads the Sumarian language on the scroll and finds himself in a contract with the goddess Inana, who tells him to collect the love juices of his sisters in the bottles before the next full moon or else a terrible horror will befall him.

Yamamoto Akuji noticed that the world is a totally different place after his release from prison. He experiences Osaka as something very new and strange after he got out of prison. During his imprisonment, the hierarchal structure flipped upside down, making it a world where the women dominated over men. Militia, churches, businesses and private businesses are operated by a female figure. Men were powerless, being controlled and enslaved by the women in Osaka. Being angered by the situation, Akuji and his partner Satsu begin their payback by teaching the stuck-up women in Osaka a little lesson...

Wataru is a young man who moves into an apartment next to Tomoka and Fumie Fusono, two voluptuous sisters who used to know him when he was a shy child. Now Wataru is all grown up, and the Fusono sisters are ready to take full advantage of that fact.