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During a monster attack on the city, which is something that happens quite often, Silk and her two friends try get close to the attacking monster for a better view. An unfortunate choice of location to watch from leads to UFO-man, the city’s giant protector, to land on the girls crushing them to death. Feeling sorry, UFO-man blames their death on the monster and promises to bring Silk and her friends back to life by lending them his power but the catch is that they now have to become the city’s protector as well.

Nina, a young girl from the Magic Kingdom, is a candidate for princess. She travels to Earth to search for Holy Stones required for her to be qualified as a candidate. On Earth, she meets Ayu Tateishi, who right away discovered her magical powers and who eventually became her best friend. They continue their friendship as Ayu further learns about Nina's mission. Finally, she collected the 5 Holy Stones. However, a dilemma then came: Nina cannot decipher on what road will she take -- to become a princess, or remain on Earth with her friends.

Marin and her sister Urin live in the sea. One day they find a ring fallen into the sea. They get out of the sea and meet a girl Kanon, the owner of the ring. Kanon tells them she doesn't want the ring anymore because it was given by her boyfriend whom she just broke up with, and she throws it into the forest. Marin thinks Kanon is still in love with him and looks for the ring with her sister. But Urin accidentally breaks a seal near a shrine...

Umineko no Naku Koro ni takes place in the year 1986, during the time frame of October 4 and October 5 on a secluded island named Rokkenjima. The head of a wealthy family named Kinzo Ushiromiya, who lives on and owns Rokkenjima, is near death, and eight of his family members arrive on the island to discuss how Kinzo's assets will be divided once he is dead. Also on the island are three family members who live there, five of Kinzo's servants, and his personal physician. After the eight family members arrive, a typhoon traps them on the island and shortly after people start to get mysteriously murdered.

Takumi Kaizu is a boy that doesn't have any particular interest in girls. During a school trip, his friend Osamu asks him whether or not he has a girl that he likes. From that point on, Takumi slowly becomes interested in the opposite sex, through the girls that he is accquainted with in his daily life. As the last summer of his high school life begins, Takumi begins to search for the one girl that he can call his girlfriend, while watching Osamu's desperate and relentless search for a girlfriend as well.

Hakuoro has lost his memory after succumbing to serious injuries; but thanks to a elderly woman and her granddaughter Eruruu, he is nursed back to health. His face is covered by a strange irremovable mask and he occasionally sees beastly visions. Eruruu now cares for him as he becomes accustomed to the village and its inhabitants who all bear strange ears (the women have tails too). Though these people venerate the forces of nature, desecration of an alter forces them to take drastic measures to preserve their lives from the wrath of Mutikapa-sama, guardian of the forest.