Growing out of the chaos of a global war, the city of Utopia is populated by humans and bioroids (artificial humans). On the surface, everything is harmonious, but tensions lurk. Into this seemingly perfect society comes a survivor of the wars, Deunan Knute, who carries a legacy that will turn out to be of critical importance to the future of humanity. (Source: ANN)

After toiling away in his lab, the alchemist Jolly has finally succeeded in making a personality-swapping potion that is guaranteed to bring him entertainment. The boys of the Arcana Famiglia are tricked into taking the potion and find themselves in bodies that are not their own. With this successful experiment, Jolly has paved the way for a plethora of uncomfortable scenarios. However, despite the boys' desperate struggle to switch themselves back, there is something to be learned from spending the day in someone else's shoes.

​On the island of Regalo, a group of supernaturally powered mafia-like protectors called the Arcana Famiglia safeguard the people from any who would harm them. The members of their organization, having made contracts with tarot cards, each possess different abilities, such as overwhelming strength, invisibility, or the power to see into someone's heart. Mondo, their leader and the Papa of their family, announces at his birthday party that he will be retiring soon. He plans to hold the Arcana Duello, a competition that, if won, will grant the winner the title of Papa and any wish they desire. But there is more at stake than just a title: Mondo also decides that the winner will marry his daughter, Felicità. Enraged by this, the strong-willed Felicità decides to enter the competition herself, in order to make her own way in the world. As Felicità battles for her freedom, her competitors battle for her heart.

The 21st century was supposed to mark the beginning of mankind's golden age of space travel. However, humanity's lingering dreams of the stars are shelved when Earth suddenly comes under attack by alien entities. Trampling across the planet's surface, these giant invaders leave nothing but death and destruction in their wake. Having suffered personal losses from the invasion, Takuto Kaneshiro joins the fight against the extraterrestrial enemies. In his quest for vengeance, the disillusioned young Takuto must seek out any possible allies, but the line between friend and foe is dangerously thin. When old powers crumble and new opportunities arise, many are prepared to capitalize on the chaos. Takuto soon realizes that the aliens may be the least complicated obstacle to uncovering the greater truth behind the catastrophic invasion.