Withdrawal of the Fourth Branch

The Withdrawal of the Fourth Branch (第四の支部離脱, Daishi no Shibu Ridatsu) was a mass separation of the Sato Branch of the Fujiwara clan from the clan's tertiary body. This event was long believed to have been influenced by the events of the Black Egg Affair.

The Fujiwara were deeply affected by the actions of Fujiwara Nanaho in her adbuction and experimentation on the Black Egg 10. In respect and remorse for the atrocity she committed, the original clan emblem of the Fujiwara - a lavender wisteria tree on a dark pinkish background - was replaced by what they colloquially called "the Sensor's Eye." In addition to the shift of the clan's symbol, a sizable portion of the Fujiwara ceded from the tertiary Kato branch to form the Sato. They dedicated their chapter of the clan to defense and military assistance, involving themselves in many missions for the retrieval, rehabilitation, and comfort of Nanaho's victims, and soon extended their hand to any of their allied countries that required their help.