Takumi lives next to Mizuki and Satsuki's house. They have been good friends since they were kids, going shopping and skiing together. One day, Kazuyoshi, Takumi's father, brings two girls, Saori and Yui, back to their house, and accepts them as new family members. At first, he is confused, but gradually becomes closer to them...

At Yachimata, there is a legend of a deity named Tayutayu-sama who protected the area, but this deity and other so-called "Tayutai" have been lost in time. Mito and his friends discover a relic on the school grounds with mysterious patterns on it. Then, at the opening ceremony of the new school year, an equally mysterious girl named Mashiro appears before Mito. Mashiro is somehow tied to the relic and the legend of Tayutayu-sama.

Sakuya goes through training to become a kunoichi.

A rumor states that if you take a photo of someone you like with your cellphone and keep it hidden, they'll fall for you. Will Makoto win his love by taking a picture of Kotonoha without anyone knowing?

After a heavy storm, Kazuma Shiraishi finds himself stranded on an uninhabited island somewhere in the Pacific. However, his situation may not be so unlucky, as 15 beautiful women are also marooned alongside him. Kazuma seizes the chance to have sex with these ladies, all while recording his raunchy deeds with three cameras he miraculously found lying on the shore. [Written by MAL Rewrite]

Rin Tsuchimi, a normal seventeen-year-old second-year high school student finds himself sought after by a variety of girls. Eight years prior, he lost his parents in a car accident that also took the life of Kaede Fuyou's mother. From that point onwards, he began living with her. At around the same time he lost his parents, he met Lisianthus and Nerine at different times who each were accompanying their fathers on a diplomatic business in the human world. Each girl became lost after wandering through the human world. During that time, Rin befriended each girl after playing with them for a day. As a result of his kindness, Rin finds himself as the potential marriage candidate for both Lisianthus and Nerine, the daughters of the king of the gods and king of the demon worlds, who recently transfer to Rin's school.