We follow the daily events of Pac as he saves Pac-World. Together with his friends Cyli and Spiral, Pac and his buds face the issues of being teenagers while also protecting Pac-World from a ghostly army led by the evil Betrayus. Pac-Worlders do not want Betrayus and his ghostly minions returning from the Netherworld and wreaking havoc. So, President Spheros teaches Pac and his pals the legend prophesizing a round yellow Pac-Worlder rescuing the planet. Pac, the only round yellow citizen, is the man for the job. Each adventure follows Pac and his friends as they try to return the ghosts to Netherworld, saving Pac-World. (Source: AniDB)

The anime will feature an original story from the game on which it is based.

The Anarchy Sisters, Panty and Stocking, have been kicked out of Heaven for, to put it mildly, misbehaving. Led by a priest named Garterbelt, these angels must buy their way back by exterminating ghosts in Daten City. But this task requires unconventional weapons for these unorthodox angels—they transform their lingerie into weapons to dispatch the spirits. Unfortunately, neither of them take their duties seriously, as they rather spend their time in pursuit of other hobbies: Panty prefers to sleep with anything that walks, and Stocking favors stuffing her face with sweets than hunting ghosts. Follow these two unruly angels as they battle ghosts, an overflow of bodily fluids, and their own tendency to get side-tracked in Panty & Stocking with Garterbelt.

With the appearance of a mysterious virus that kills everyone above the age of 13, mankind becomes enslaved by previously hidden, power-hungry vampires who emerge in order to subjugate society with the promise of protecting the survivors, in exchange for donations of their blood. Among these survivors are Yuuichirou and Mikaela Hyakuya, two young boys who are taken captive from an orphanage, along with other children whom they consider family. Discontent with being treated like livestock under the vampires' cruel reign, Mikaela hatches a rebellious escape plan that is ultimately doomed to fail. The only survivor to come out on the other side is Yuuichirou, who is found by the Moon Demon Company, a military unit dedicated to exterminating the vampires in Japan. Many years later, now a member of the Japanese Imperial Demon Army, Yuuichirou is determined to take revenge on the creatures that slaughtered his family, but at what cost? Owari no Seraph is a post-apocalyptic supernatural shounen anime that follows a young man's search for retribution, all the while battling for friendship and loyalty against seemingly impossible odds.