Yuuto Suzuki

Lu Shuiyin (Riku Suigin in Japanese) is a master of gaming, a skill only known to his classmate Lu Lian (Riku Lin in Japanese). One day, Shuiyin receives a device from Lu Lian for a tomb raiding online game. While Shuiyin is excited to receive the device, Lian is suddenly kidnapped. Shuiyin touches the device that was left behind, pulling him inside the game and trapping him there. What is the imaginary world inside the device? What will Shuiyin find there? It is a world where two groups of people fight over the power of the gods, which originates from the tomb the mother goddess Pangu (Bango in Japanese). The two groups are the tomb raiders and the tomb protectors. The device Shuiyin received from Lian is called the Monolith, and it allows a normal gamer to go near the tomb. The tomb raiding group plans its attack by recruiting common people in the name of gaming. Shuiyin, as the final tomb protector, must fight against the raiders in order to save Lian.

The year is 1863 as the tumultuous samurai era is coming to an end, Japan is split between the pro-shogunate and anti-shogunate factions. The fate of the world is threatened as an army of historical revisionists are sent from the future to alter the course of history. In order to bring these forces down and protect the real history, two sword warriors, spirits who are swords brought to life by Saniwa (sage), rush to Edo. The polite and thoughtful Horikawa Kunihiro and the short tempered yet skillful Izuminokami Kanesada, who served the same master, confront the invading army along with a lively gang of other warriors including Mutsunokami Yoshiyuki, Yagen Toushirou, Tombokiri, and Tsurumaru Kuninaga. As the fate of history lies in these hero's hands, what meets the blade is yet to be uncovered...

On February 13, as snow flurries dance in the air, a new idol unit is born at Pythagoras Production. They are the idols who will deliver their kiss to the ends of the galaxy: Marginal #4. Its members, Kirihara Atom, Aiba Rui, Nomura L, and Nomura R, put all their effort into their entertainment career for the sake of the fan supporting them! They continue to mature as idols along with the senior unit pulling the entertainment industry forward, Lagrange Point, and the younger unit preparing to make their debut, Unicorn Jr. But when they step off the stage, they're ordinary high school boys with some chaotic student lives!

The story revolves around a 16-year-old boy (15 at the beginning of the story) named Mahiru Shirota who likes simple things and dislikes difficult things. One day, he picks up a stray black cat he finds in the middle of the road and gives it the name Kuro (which literally translates into "black"). From this moment on, a contract between the servamp Sleepy Ash and Mahiru is formed, and Mahiru is pulled into the Servamp war between the seven deadly Servamps and their eighth sibling Tsubaki.