Tennomifune Academy is an elite institution for the best and the brightest, with the exception of Class 1-7, the so-called "Happiness Class." Each member of the classroom copes with personal misfortunes, and the special class is geared to help them move past their issues and find true happiness. After being accepted into the academy, An Hanakoizumi, Ruri Hibarigaoka, and Botan Kumegawa find themselves placed into the Happiness Class, plagued by dreadful luck, love problems, and bad health respectively. Alongside their classmates, they do their best to overcome the difficulties they are faced with in pursuit of a life filled with joy. [Written by MAL Rewrite]

The legendary Renegade Pokémon, Giratina, encounters the Temporal Pokémon Dialga by a lake and successfully manages to drag Dialga into its home—an alternate dimension separate from the normal world. But a small green Pokémon gets gotten dragged in as well—and though it somehow escapes, Dialga uses this opportunity to escape as well after preventing Giratina from chasing after it.

After accidentally ruining Satoshi and his friends' picnic, the green Pokémon is taken to the Pokémon Center where it is treated for injuries and introduced as Shaymin, the mythical Gratitude Pokémon. Using telepathy, Shaymin demands that Satoshi, Hikari, and Takeshi take it somewhere. But before they can find out where to go, the group find themselves being pursued by both Giratina and a strange man named Zero—both in search of little Shaymin! Will Satoshi and his friends be able to find Shaymin's desired place while keeping themselves out of danger?

[Written by MAL Rewrite]

Unaired episode included in the 7th Blu-ray/DVD volume of Bokura wa Minna Kawaisou anime.

Obsessed with revenge against the King of Games, Seto Kaiba commences an excavation in Egypt to find the fragments of the Millennium Puzzle, which once retained the spirit of the "counterpart Yuugi." However, a cloaked man steals two pieces of the Puzzle and disappears before it could be reconstructed. Meanwhile, now in their final year of high school, Yuugi Mutou and his friends plan for their futures, unaware of the danger lurking close by. 

Yu☆Gi☆Oh! The Dark Side of Dimensions tells the tale of vindictive forces distorting reality in whatever way they please. Will Seto and Yuugi move past their differences and save the world, or will Seto's own greed get the better of him?

[Written by MAL Rewrite]