Sakuya Otsuki is the son of a legendary detective, working to follow in his father's footsteps with his assistant, Lilithea. However, something's different about this high-school sleuth. Wherever he goes, he always manages to get himself entangled in his cases—as a murder victim! When Sakuya is tasked to infiltrate a luxury cruise ship, he finds himself killed once again. But every time he reopens his eyes, Lilithea is there by his side, ready to help him get to the bottom of the mystery... (Source: Yen Press)

The Royal Diana Academy is a prestigious school that accepts individuals with adept magical abilities. Upon graduation, these students find themselves at the top of their field or employed by the royal family. Spica Virgo dreams of studying at the academy, aiming to be a top-rate sorceress like her idol Claude Sirius. Claude is a world-renowned sorcerer who became the institution's youngest instructor, but mysteriously disappeared soon after. Lacking the experience and connections required for admission, Spica finds herself unable to make meaningful progress with her training. One day, however, she meets a talking black cat with magical abilities. Hoping to change the situation for the better, she begs the animal to take her as his apprentice and teach her the magic she needs to attend the academy. The cat accepts the deal on one condition—she must find a way to reverse his feline curse. Despite the arduous challenges ahead of her, Spica is determined to prove herself as a student worthy of the cat's mentorship.

Tanzaburou Toujima has spent his entire life chasing a dream: to become Kamen Rider. Now, at 40, reality has nearly caught up with him, and he's on the verge of letting go of his childhood fantasy. That is, until he gets caught up in a crime wave led by the Fake Shocker gang—turning his long-time dream into something far more dangerous. What starts as a pretend hero's journey quickly becomes something real. The ultimate Kamen Rider fantasy is about to begin! (Source: MAL News)

The protagonists of the series are the three Kisugi sisters—Hitomi, Rui and Ai—who run a café called Cat's Eye. The sisters lead a double life as a trio of highly skilled art thieves, leaving cards with the name Cat's Eye at the scene of their crimes. They steal works of art that belonged to their long-missing father, Heinz who was a famous art collector during the Nazi regime, in the hopes of him contacting them. Toshio, the police officer investigating this case is the fiancé of Hitomi. He also swears to capture and bring down the Cat's Eye Gang.