Youkai Academy is a seemingly normal boarding school, except that its pupils are monsters learning to coexist with humans. All students attend in human form and take normal academic subjects, such as literature, gym, foreign language, and mathematics. However, there is one golden rule at Youkai Academy—all humans found on school grounds are to be executed immediately! Tsukune Aono is an average teenager who is unable to get into any high school because of his bad grades. His parents inadvertently enroll him into Youkai Academy as a last-ditch effort to secure his education. As Tsukune unknowingly enters this new world, he has a run-in with the most attractive girl on campus, Moka Akashiya. Deciding to stay in the perilous realm in order to further his relationship with Moka, he does not realize that beneath her beauty lies a menacing monster—a vampire. Rosario to Vampire is a supernatural school comedy that explores Tsukune's romantic exploits, experiences, and misadventures with a bevy of beautiful but dangerous creatures. [Written by MAL Rewrite]

Second season.

Nemeses—powerful and mysterious demonic entities that fall from the sky and vaporize anything they touch. The only ones who can combat these creatures are Sorcerers, those who have survived an encounter with a Nemesis but were infected in the process. Seth, a Sorcerer from Pompo Hills, sets out on an adventure to exterminate all these Nemeses. Accompanying him are Doc and Mélie, fellow Sorcerers who share his ideal. Their main objective is to bring about a world where Sorcerers are no longer persecuted for being infected, and to that end, desire to destroy the source of the Nemeses themselves: the mythical Radiant. [Written by MAL Rewrite]

The story revolves around a race that seeks to dominate the galaxy. A lone mysterious female warrior, known to others as Emeraldas sails the endless planets of the universe- in her Seas of Star ship- fighting the tyranny of that merciless race. She is tormented by the memory of her lost love.