**In this fantasy tale, a weak human adventurer is determined to turn the tables on his traitorous party members–with the help of a special skill and sexy new allies!** A kid named Light is the only human member of the adventuring party known as the Concord of the Tribes…but humans are by far the weakest of the races. When his comrades abandon him to the lowest levels of the dungeon, Light resorts to the gift of Infinite Gacha to create a harem of Lvl 9999 allies! With his new, and sexy, friends, Light can escape the dungeon, and more importantly, take revenge upon the Concord of the Tribes, and perhaps even break the entire world! *Source: Seven Seas Entertainment, Vol. 1*

The dark fantasy story begins when Makoto, a cheeky university student, discovers some strange pictures on his second-hand purchased smartphone. One day, a new part-time worker, Misuzu, arrives and looks exactly the same as the beautiful girl in the photos. Makoto is half in doubt if the girl in the photos is the same person as his new co-worker. His life changes after meeting her.

Seishin Kamisawa is a third year high-school boy especially smart and cultivated, His life changes dramatically when his father and sister both fell into a coma after a car accident. Desperate, he discovers a strange dice in his sister's room and from it a shinigami appears! The God of Death offers him to bet his life in order to save his family. Seishin accepts, and he discovers that he is now linked to the dice. He now has to compete in gambles against others if he wants to save his life and his family's. Gamble is life. The dice of destiny will change the world!