Cells at Work! Code Black

In the year 1711, a group of alchemists are granted an elixir of immortality, with the stipulation that they must kill each other until there can be only one. The now-immortal group unanimously decides it wasn't worth it and destroy the elixir; but one of them, Slizard Quates, starts to kill off his fellow immortals. To reduce the risk of Quates tracking them all down, the group separates and goes their separate ways. Neither of them crosses paths again till 1930, Manhattan, when Quates manages to create a new elixir of immortality. However, he loses it and it ends up going around town, taken to be a bottle of alcohol and unknowingly drunk by many residents. The drinkers of this new elixir include Isaac and Miria, an eccentric pair of thieves; the Gandor brothers, a Mafia family; and their associates in the Camorra, the Martillos (who employ some of the original immortals). Now, not only are a new group of immortals created, but the simmering criminal underworld is about to explode.

War for the Holy Grail - Pursuing the power of the "Holy Grail" which grants a miracle, this is a contest in which seven mages summon seven Heroic Spirits to compete for it. In the battle whose conclusion was postponed three times, now, the fourth war commences. Amongst the mages, there was a man who was always alone, and could not find out the meaning behind his life. His name was Kirei Kotomine. Not comprehending the guidance of fate, Kirei was lost, and had kept questioning why someone like him was given the Command Seals. However, a nemesis crossed Kirei's path. That person is - Kiritsugu Emiya. A merciless mage killer and assassin-for-hire who sought the miracle of the Holy Grail on behalf of his wife's family - the Einzberns. Merely recited in fragments in Fate/stay night, this is the Fourth Holy Grail War that took place 10 years prior. The truth that unfolded behind the battle between Shirou's foster father, Rin's father, and the younger Kirei Kotomine, is finally revealed.

Mayumi Dojima, a second-year student at the exclusive Yubiwa Academy middle school, has lost something - a star she glimpsed just once, ten long years ago. But help is on the way, in the form of the unofficial, secretive, and thoroughly mysterious Pretty Boy Detective Club! Rumored to solve problems within the school (most of which they themselves might as well created) for reasons aesthetic rather than financial, these five gorgeous boys sweep Mayumi into their world of excitement, danger, and overwhelming beauty.

While on a midnight stroll, a girl named Ai picks up an egg. A voice coaxes her: "If you want to change the future, you only need to choose now. Now, believe in yourself and break the egg." What awaits Ai after the breaking of the egg?

The female looking and first autonomous AI named Diva is created for one mission to make everyone happy by singing. Shortly Diva is confronted by an unknown "program" from the future with objective to make Diva join him and destroy AIs.

In a grandiose mansion, a young cheerful living doll begins to serve her shadow mistress, only to find out through their bonding that things are not what they appear to be.