Lycoris Recoil

In the year 2113, people are given brain scans to determine how likely they are to commit a crime. Those who fail are apprehended, or even killed.

15 years ago, an unknown hyperspace gate opened over the Pacific. Beyond this gate lies Reto Semaani, a strange alternate world where fairies and monsters live. San Teresa City—a city where over two million immigrants live from both worlds. As a result, there are the haves and the have-nots. Here is the world's newest "city of dreams." But in the shadow of the chaos, crime is rampant: drugs, prostitution, and weapon trafficking. The detectives who stand up to these heinous crimes are in the San Teresa City Police. When the detective Kei Matoba and the alternate-world knight Tirana—two individuals who differ in gender, personality, and even world of origin—meet, an incident erupts. Two worlds. Two justices. From this, the curtain rises on a buddy police action story!

Two kids whose families own businesses in a shopping arcade that's scheduled to shut down are thrown into a series of dimensions, each one a parody of some form of anime or video game, and try to find their way home.

The anime follows a salaryman who has a chance meeting with a girl named Ai on the train. They begin to meet every Monday on the train, with the man serving as her bodyguard on the crowded commute while they chat.