Haruka's manga and anime hobby is still concealed by her dear friend Yuuto, but Yuuto's other female friend starts to feel affection and attraction towards him, so a feelings war begins among their circle of friends. Meanwhile Yuuto tries to make Haruka happy doing what she likes the most: drawing manga, watching anime, and attending special anime events. (Source: ANN)

Bullies often target someone frail and weak—someone exactly like Yuugi Mutou. His beautiful childhood friend, Anzu Mazaki, is always there to stand up for him, but he can't depend on her forever. Katsuya Jonouchi, who is almost always accompanied by his verbal sparring partner Hiroto Honda, doesn't seem like a bad person either, despite always bringing Yuugi trouble. But most of all, Yuugi wishes for a true friend who understands him and would never betray him. Yuugi treasures his Millennium Puzzle, an ancient Egyptian artifact that was brought into his grandfather's game shop. Believing that solving the puzzle will grant him his wish, he completes the puzzle, unleashing a new personality within him—the soul of the "King of Games." Dark, twisted, strong, and reliable, the new personality named Yami Yuugi is the exact opposite of Yuugi. Upon any injustice toward him, Yami Yuugi takes over Yuugi's body and forces the opponent into a "Shadow Game." The stakes are high as whoever loses shall have a taste of the darkness that resides within their own heart. [Written by MAL Rewrite]

The anime's story will start where the third season left off, at the competition for who will open the Triple S international sporting event. Raging Entertainment's HE★VENS idol group had hijacked the competition between QUARTET NIGHT and ST☆RISH, causing chaos. However, after the QUARTET NIGHT members suggest a certain idea, the three groups aim toward a new stage, with HE★VENS swearing to get their revenge on the other two groups.

Serious and generous, but a bit shy, Yuudai has been unsuccessful with the opposite gender. Chizuru is an energetic and cheerful girl, but when it comes to boyfriends, she's been unlucky and clumsy, and never had a steady relationship. This is the first Christmas the couple spends together. Chizuru loves animals and Yuudai plans to give her a rabbit in a box, but it turns out to be... a mini donkey?! As the funny creature escapes, Chizuru goes after it, and Yuudai loses sight of them both! The time that should have been spent together... The important feeling that should have been revealed... Small, but precious things that tend to be buried in every day life. What answer will the two youngsters find while separated from each other? Yuudai and Chizuru—their feelings and the time they spent far from each other are delicately unfolded in this double-sided pure love story told from two different perspectives!