Aya Tachibana is a sixth-grader who frets and obsesses over friends, family, grades, and more. One day, she joins the "Tantei Team KZ" with four very idiosyncratic boys she met at cram school. There is the glib and attention-grabbing leader Kazuomi Wakatake, the mysterious "expert of personal relationships" Takakazu Kuroki, the smart and stoic math genius Kazunori Uesugi, and the sweet-hearted Kazuhiko Kozuka who is good at social matters and science. Aya finds her place among them as the "language expert." "Tantei Team KZ" gets involved in modern-day cases, and even if they bicker from time to time, they collaborate by pooling each of their talents and skills to solve these cases. (Source: ANN)

In order to prevent the catastrophe called the Grand Fall, Rid Hershel and his companions Farah, Keel and Meredy have obtained the three Greater Spirits ("Craymels" in the game version) of Inferia. En route to Mount Farlos, Rid is kidnapped by the bounty hunter Marone Blucarno, and the party is compelled to head to Belcarnu, an archipelago far from the major cities of Inferia. A series of adventures forces them to remain on the islands, where a more immediate threat to Inferia sleeps.

Harry is definitely not your average American teenager. Instead, he is the epitome of an "alienated youth"—friendless at school, extremely weird, and nervous to the point of paranoia. But a chance occurrence causes Harry to start to demonstrate what appear to be psychic powers—yet he neither believes in them nor consciously controls them. However, there are other ominous forces at work who do believe in Harry and attempt to make use of him in ways that are threatening and frightful. (Source: AniDB, edited)

A Keio University (one of the top three colleges in Japan) exam candidate, Touma Inaba, is interupted when a cute young girl, Urara Kasuga, arrives at his hotel room door. She later turns out to be his cousin who he barely remembers from his childhood. Urara, who had felt something special for him (an other-than-cousinly-love), invites Touma to live with her since he has no place to stay other than the hotel room. Before taking the test, Touma meets Meiko Yotsuba, a beautiful, sophisticated woman also trying to get into Keio. Meiko gets into Keio but Touma does not, due to a cold Urara had given him shortly before. Although he did not make it, he pretends he does to earn the respect of Meiko. Touma is caught up in a love triangle with Urara and Meiko, while struggling to keep Meiko believing he's really a Keio student and still be there for Urara at the same time. (Source: ANN)