Di Youweimen was extremely decisive. After taking him out, he immediately retreated with Lancer Black Jeanne. There were so many Servants on the other side, and they all seemed to know each other. Given their respective positions, if he did not leave, they might join forces against him. If this had not been such a rare opportunity to kill Tsuchimikado Taiko, he probably would not have acted at all.
As a survivor of the Shimabara Rebellion, Di Youweimen naturally held no fondness whatsoever for the current shogunate. If there was no opportunity, then so be it. But if one arose, he certainly would not mind taking action.
"This time, I won't let you get away."
Di Youweimen and Lancer Black Jeanne retreated swiftly. Since neither of them was a behind-the-scenes mastermind on Tsuchimikado Taiko's level, no one pursued them. But Shen Fei would not let him go. The Waxing Moon Ritual was about to end.
He sympathized somewhat with Di Youweimen's plight, but that was no reason to spare him. If someone other than Black Jeanne had been beside him, Shen Fei might have let him go and left him to fend for himself. But Black Jeanne was different. Unlike other Heroic Spirits, she was unique. She had no other aspects.
She had come from a Singularity, created through the Holy Grail's power by Bluebeard, along with the convergence of various other factors. Black Jeanne being the Dragon Witch, for example, came from legends surrounding Saint Martha, Saint George, and others, then had been reversed and manifested upon her through the Holy Grail.
If the Black Jeanne summoned here had been the ordinary Black Jeanne, Shen Fei would not have been surprised. After all, there was already a female Musashi here, which meant another Chaldea existed. In that case, another