Many decades in the past, there was a war between the Taoshi and Chronos. Chronos eventually won, even though not all Taoshi were killed. In the current Chronos, the only Number that witnessed this War was Mason, which himself became a Taoshi, granted with the Sacred Technique. However, he had kept this from everybody in Chronos, planning the Eden project for a long time (More information below). The survivors among the Taoshi that make an appearance in Black Cat are no more no less than Shiki and Maro, which upon meeting Creed grant him the power of Tao in exchange for an alliance which objective was to destroy Chronos and bring about a revolution to this planet, which would choose the Taoshi among the people, and rid everyone else.