Post apocalyptic AU. The mortal plane has become trapped between an endless battle between Heaven and Hell. The Seven Deadly Sins and Heavenly virtues fight over the fate of mortals in this world. There's only one question since the fighting seems endless; how did things get like this for the Keroro platoon?

When Keroro and his platoon journey to a planet for supplies for a celebration, they get sucked into a black hole teleporting them to a future where they've invaded, or more specifically Kululu has. Seeing the destruction he's caused they try to search for a way back, only to find they need the new dictator Kululu to help them. Two geniuses are better than one. Except not always.

Located just south of Tokyo, the Hinata House is an esteemed and well-funded mental institution. Patients' conditions range from hallucinating aliens to compulsive lying. The Hinata House strives for a calm, relaxing environment for recalibration and rehabilitation. Visitors get 1 hour max. And whatever you do, don't touch Floor 4. [AU]

Medieval fantasy AU. When an evil Dictator threatens Natsumi's family she is forced to flee into the forest to save her and her brother's life. Swearing revenge on the person who hurt her, she becomes determined to beat the person who attacked her. But revenge has many costs, and is she the only one who has sworn revenge? Based loosely on fairy tales.

After Fuyuki decides to sleep in a haunted house with his friends and family; after the Garuru platoon joins them looking for a serial killer on the loose the group gets sucked into the killer's realm who has taken control of the house, separating them in different dimensions and forcing them to play a survival game.