Amu meets a super-peppy transfer student at Seiyo Academy Elementary School named Hiiragi Rikka at school one day. Not only can she see Guardian Characters, but it seems she has some other, mysterious powers as well. When she sees the work that Amu and the other Guardians do at school, she's awestruck. Each 24-25 minute episode consists of a series of variety show style shorts (including Shugo Chara! Pucchi Puchi) totaling approx. 9-10 minutes, followed by the main 11-12 minute animation titled Shugo Chara!!! Dokki Doki which is the actual continuation of season 2 and comes with it's own opening animation. The remaining time is occupied by live action padding between each section and capped off with the opening/ending themes at the beginning and end of the episode.

Amu Hinamori is a student at Seiyo Elementary, where she has a reputation for being "cool and spicy"; however, her real personality is that of an extremely shy and easily intimidated girl. One night Amu makes a wish that she would have the courage to be reborn as her "would-be" self. The next morning Amu finds three brightly colored eggs—red, blue, and green—in her bed. Each egg eventually hatches into a Guardian Character: Ran, Miki, and Su. Guardian Characters are angel-like beings that aid a person into becoming their "would-be" selves and fulfill the person's dreams. The Guardian Characters accomplish this by giving encouragement and advice, but they can also temporarily change a person's personality and abilities. With the Guardian Characters, Amu's life becomes much more complex as she now struggles to deal with her new personalities and the Seiyo Elementary Guardians—a student council group where each member has their own Guardian Character—who recruits Amu to search for and seal the X eggs and X Characters, corrupted forms of people's dreams.

Now Utau has left Easter and restarted her singing career, while Ikuto still remains at Easter. To replace Utau Easter hires a new character, Lulu. Lulu has the power to create question mark eggs, instead of x-eggs. Throughout this season we start to see all the love interests more so then in the first season. Tadase and Amu seem to be a couple now, but they have their problem, especially when Amu starts hiding Ikuto in her room. She lies to Tadase, her family and all the Guardians about it, which in the end causes more problems then she expected. Easter also has a new plan to control Ikuto. Using his violin Easter controls Ikuto so that he transforms into Death Rebel. The sound of his violin turns all the heart eggs with in distance into x-eggs. With a large amount of x-eggs gathered, the embryo will soon turn up.

The story takes place in a trading city Ert’Aria. Leicester Maycraft is an item engineer belonging to an adventurer guild “Oasis”. One night, he is at a party with his friends to see a meteor stream on the rooftop of a chapel. One meteor grazes them and hits the steeple of the chapel. There he finds a secret room and a sleeping girl. The girl wakes up and says “You must be my father!”. The encounter with the mysterious girl brings an unexpected adventure to Leicester.

The story takes place in a trading city Ert’Aria. Leicester Maycraft is an item engineer belonging to an adventurer guild “Oasis”. One night, he is at a party with his friends to see a meteor stream on the rooftop of a chapel. One meteor grazes them and hits the steeple of the chapel. There he finds a secret room and a sleeping girl. The girl wakes up and says “You must be my father!”. The encounter with the mysterious girl brings an unexpected adventure to Leicester.

Legends tell of an invincible martial art known as Mutsu Enmei-Ryu, an unarmed style that allows the user to defeat any number of armed opponents using incredible speed and strength. This is the story of three generations of those who bear the name Mutsu, and their encounters and battles with the strongest fighters of their era.

During the An Lushan Rebellion of the Tang Dynasty, monsters are everywhere and the people were destitute in the Central Plains. Li Haobai started from the Bashu and wanted to go to the front line to make a meritorious deed. On the way he was swallowed by the monster. By coincidence, Li Haobai and the guardian of the dragon’s veins merged with each other to obtain the power of the black dragon. And he has since been involved in the struggle of various forces.

As a baby Jiro was delivered to his foster parents by a massive oni, who said he would return for Jiro in 15 years. When the time comes Jiro must contend with enemy oni, dark cultists, and their minions while attempting to protect both his parents and girlfriend from their depredations. Ultimately he must embark on a journey through the past, future, and other dimensions to embrace his destiny as Shuten Doji reborn.

As a baby Jiro was delivered to his foster parents by a massive oni, who said he would return for Jiro in 15 years. When the time comes Jiro must contend with enemy oni, dark cultists, and their minions while attempting to protect both his parents and girlfriend from their depredations. Ultimately he must embark on a journey through the past, future, and other dimensions to embrace his destiny as Shuten Doji reborn.

In the future, age is not a factor to determine whether someone can perform a certain task or not, but special talent and training. An organization, Machine Robo Rescue (MRR), was established for robots and children to become partner and rescue people from danger. Then 12 children with various abilities were selected and introduced as part of this program: Robo Rescue! Meet Oozora Taiyou, one of the children who were chosen as a part of MRR program. After being late on his first day of training, he went to perform a hot rescue with JETROBO. However, a mysterious Robot from mysterious organization, "The Star"(?), appeared before MRR team to interfere with the rescue. What are the motives of the mysterious organization? And what are their goals? Life as one of the children chosen as part of MRR has started for Oozora Taiyou. Bumpy and hard training is just ahead for MRR team in order to protect many people's life!

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Five hundred years have passed since the humans went extinct at the hands of the fearsome and mysterious 'Beasts'. The surviving races now make their homes up on floating islands in the sky, out of reach of all but the most mobile of Beasts. Only a small group of young girls, the Leprechauns, can wield the ancient weapons needed to fend off invasions from these creatures. Into the girls’ unstable and fleeting lives, where a call to certain death could come at any moment, enters an unlikely character: a young man who lost everything in his final battle five hundred years ago, the last living human awakened from a long, icy slumber. Unable to fight any longer, Willem becomes the father that the girls never had, caring for and nurturing them even as he struggles to come to terms with his new life, in which he feels the pain of helplessly waiting for his loved ones to return home from battle that his 'Daughter' once felt for him so long ago. Together, Willem and the girls gradually come to understand what family means and what is truly worth protecting.