Are puzzles really necessary in this world? In order to restore Jin's memory, Kaito and his friends go on a puzzle-viewing journey to England. As they're walking through the underground maze beneath the church, where young Kaito and Rook first met Jin, a mysterious girl appears in front of them. Jin calls the girl by the name Raetsel. It seems they know each other. However, she suddenly disappears and takes Jin with her. What's more, the traps in the underground maze are activated and start coming after Kaito and his friends. (Source: www9.nhk.or.jp)

Mafia is rife in America where assassinations are a regular occurrence on the streets. Inferno, a mysterious company, is behind most of these dealings through the use of their near-invincible human weapon, Phantom. One day, a Japanese tourist accidentally witnesses Phantom's latest murder. Desperate to escape, the tourist hides in a secluded building. However, Phantom, revealed to be a young woman named Ein, and the leader of Inferno Scythe Master captures the tourist and brainwashes him. Given the name Zwei, this once peaceful tourist is now a puppet of Inferno with no memories. Drawn into a world of lies, deceit, and violence, Zwei must fight to survive, hopefully to one day regain his memories and escape from this world where he is constantly on the brink of death.

Kazuya, a mild-mannered high school sophomore coming to the end of a very average summer break, receives a digital single lens reflex camera as a gift. His nerdy fascination with its design soon turns to wonder when he realizes this little gadget could really give his social life a shot in the arm! (Source: TBS)

Zwei was an ordinary person, until one day, while walking the streets a night, he witnessed a brutal assassination. He managed to avoid the sniper, a young girl named Ein, but was soon captured, and had the memories of his former life erased. He is spared death only by accepting a condition: to train to become an assassin alongside Ein. Now, he must find a way to free himself from this shady world and reclaim his life once again. (Source: ANN)