Several months after a probe returning from Mars burns up during reentry, strange creatures dubbed "Ancients" begin to appear throughout Tokyo. Aggressive and dangerous, they cannot be killed with ordinary weapons. As scientists struggle to find the cause of their sudden appearance, the monsters wreak havoc across the world. Humanity finds hope in the form of the MARS suit—a new weapon developed to take down these enemies. The suit, however, can only be worn by those with specific DNA. Enter Takeru Hinata, an ordinary teen with a troubled past and one of the few capable of piloting the only weapon against the Ancients. With the help of the AAST, a special police force established to defeat the dangerous creatures, the young man battles against demons both personal and global whilst trying to discover the true nature of Earth's new aggressors.

Legends speak of a Dark Tower with a race of dragons that awaits the command to arise and wreak havoc. At least Kyle used to believe they were only legends until his lady, Alita, is stolen by the Black Dragon! Now Kyle must form an alliance with Blau, a blue dragon, in order to rescue her before she becomes the catalyst for the Dark Tower's final program: the complete destruction of the world!

Once every century, the legendary mahjong dials called the "Legendary Pai" show themselves to the world, and if you collect them all it will grant you any wish. They show up in the form of evil monsters and you must defeat all 10 to obtain this chance. So, a Bunny Alien, A Maid-Dominatrix, A Cyborg, A girl form the world of magic and a transforming super hero all must fight these monsters along with themselves to grant the wish that they want to come true.

To some people, Densuke Mifune looks like the luckiest man in the world. Thanks to a chance encounter with the brilliant, beautiful, busty, but extremely shy Chiharu Shinonome, Eiken: Eikenbu yori Ai wo Komete sees Densuke being forcibly invited to join the mysterious Eiken Club. Led by Kirika Misono, she recruited Densuke both for his completely boring, unassuming nature and his completely accidental groping of Chiharu’s chest. Despite the fact that he’s now surrounded by insanely busty women, Densuke can’t catch a break to save his life. All of his attempts to get closer to Chiharu end up backfiring, making him look like a deviant pervert. His situation is made more complicated by the rest of the Eiken Club’s overly sexual antics and Chiharu’s younger sister intentionally trying to get Densuke into some…compromising positions. It doesn’t help matters that Chiharu has expressed fondness for Densuke in return, but all of the accidental circumstances keep pushing her away. Densuke needs to act fast if he wants to find his way back into Chiharu’s good graces. A beauty like her doesn’t go unnoticed, and he may very well find that he’s not the only one trying to win Chiharu’s heart.