Second half of Maou Gakuin no Futekigousha: Shijou Saikyou no Maou no Shiso, Tensei shite Shison-tachi no Gakkou e Kayou II.

The story is set in a world where the value of Bikkuri-Man stickers are so high that they have to be transported in a cash transport vehicle. There was also the famous robbery case one year ago, called the "300 million Bikkuri-Man sticker case." One day, a high-school delivery part-timer named Yamato gets involved in a battle over stickers between two competing convenience stores. The Angel Mart owned by the Phoenix store manager is famous for its easy-to-use glitter stickers. The Devil Store across the street also tries to attract Bikkuri-Man fans to their store. Former comrades are divided into allies and foes, and the battle of destiny begins. (Source: ANN)

Hiroto Shinohara is a new transfer student to Academy Island, where games determine student rankings. The more games won, the more stars a student has, with the highest ranking being that of a Seven Star. On Hiroto's first day, he accidentally antagonizes Sarasa Saionji, the so-called Empress of Academy Island and granddaughter of the island's head director. Forced into a game fueled by misunderstandings that he somehow ends up winning, he is thrust into a major bluff where he must lie about his ranking or risk expulsion from the school and island. Fortunately, with the help of the mysterious Company headed by Shirayuki Himeji, Hiroto is not alone in his bluff. The Company will do everything in its power to help him cheat his way through the game challenges sent his way by students wanting to beat him. Though he is a One Star student, he must fight as though he is actually a Seven Star, and overcome insurmountable odds in his quest to search for a missing girl from his past.