Siblings Aki and Sora Aoi have been in a secret relationship ever since they confessed their feelings to each other on a rainy day. Sora's twin sister Nami—unaware that his affections lie elsewhere—decides to have him join the Fashion Research Club at school in an attempt to set him up with their classmate, Kana Sumiya. However, Nami's actions mask painful truths. While her motives appear like those of a good sister trying to help her brother finally get a girlfriend, she is harboring secret, forbidden feelings of her own.

1. Batsukoishi-hen 2. Ayakashisenshi-hen 3. Musubienishi-hen 4. Yumeutsushi-hen

Ikuto Touhohin just had a fight with his old man, one that led him to make a rash decision to run away from home. He boards a ship, deciding to take a vacation, but the ship is suddenly hit by a huge storm—one that sends Ikuto overboard! When he regains consciousness, he realizes he is still alive on some island. An isolated island. An isolated island with nothing but girls. Beautiful girls. Stranded on an island with only girls, no electricity, gas, radio, television, like he was back in the stone age. (Source: AniDB)

Forgetful and good-natured Run Momoki has been best friends with Tooru Ichii since childhood. Despite Run being one year older, her carefree attitude and popularity with the boys is a constant headache for the overprotective Tooru. To complicate matters further, when Tooru applies to the same high school as Run, she finds out that their little circle of two has grown into a quartet. Their new acquaintances—Nagisa Tennouji and Yuuko Nishi—are classmates of Run and, in Tooru's eyes, the two must prove they are trustworthy. As a new high school year begins, the girls balance their friendship with the exhilarating opportunities of school life.