Black Life Card

Heng is the last member of the Destiny Master, one of the five guardian families of Brahma City. After his master Shun disappeared suddenly, he lived in seclusion in the big library left by his master and did not care about the world. But suddenly one day, a black life card appeared in front of him. The life card told him that he would die in seven days. Heng was forced to return to the world. As he investigated, he found that clues seemed to point to every family...