
Thirty years ago, the Eurasian continent was devastated by a supermassive "spatial quake"—a phenomenon involving space vibrations of unknown origin—resulting in the deaths of over 150 million people. Since then, these quakes have been plaguing the world intermittently, albeit on a lighter scale. Shidou Itsuka is a seemingly average high school student who lives with his younger sister, Kotori. When an imminent spatial quake threatens the safety of Tengu City, he rushes to save her, only to be caught in the resulting eruption. He discovers a mysterious girl at its source, who is revealed to be a "Spirit," an otherworldly entity whose appearance triggers a spatial quake. Soon after, he becomes embroiled in a skirmish between the girl and the Anti-Spirit Team, a ruthless strike force with the goal of annihilating Spirits. However, there is a third party that believes in saving the spirits: "Ratatoskr," which surprisingly is commanded by Shidou's little sister! Kotori forcibly recruits Shidou after the clash, presenting to him an alternative method of dealing with the danger posed by the Spirits—make them fall in love with him. Now, the fate of the world rests on his dating prowess, as he seeks out Spirits in order to charm them. [Written by MAL Rewrite]

High school student Kio Kakazu leads an ordinary life in Okinawa. When attending his grandfather's commemoration, a chance encounter with an eccentric girl named Eris—whose body features resemble a cat—makes him pass out. After finally waking up, Kio is surprised to discover a half-naked Eris right next to him! She explains that she is from a planet called Catia, and her duty is to research Earth and expand her kind's social network. Due to the warm welcome she received from his family, Eris decides to live in Kio's house. However, the pair's idyllic situation is threatened when people from secret organizations—including his own childhood friend, Manami Kinjou—all aim to seize Eris. If Kio wants to leave a positive impression of Earth on Eris, he has to protect her at all costs and convince everyone that she is not a threat to the planet. [Written by MAL Rewrite]

The year is 2046. Detective Ross Sylibus is transferred to Mars when a country singer on her flight is murdered. Making matters more complicated is that the singer is a "Third"—a robot that looks and feels like a human. Sylibus is partnered with Armitage—a beautiful female cop with a bad attitude. As they investigate the murder of the singer and other women on Mars, they uncover a conspiracy that can have them both killed by the Martian government. (Source: ANN)

The franchise is celebrating its 20th anniversary with this new project. Note: The recap episodes are not included in the main episode count and are now included here.