"How long have you kept me waiting?" Zero asked Xia Mi.
Knowing Xia Mi's true capabilities, Zero was well aware that those fools from the Kanto Branch and Kansai Branch were nothing more than insignificant grunts to a girl whose true identity was one of the Supremes. Xia Mi could never be slower at eliminating enemies than she was; the only possible explanation was that Xia Mi had calculated the exact time it would take Zero to finish off her opponents, and had deliberately lagged behind by a few moments.
"Not long, just a few minutes. Waiting in the tunnel was so boring, and these guys wanted to chat and keep me company, which was actually quite amusing," Xia Mi smiled at Zero. "Senior Sister took less time than I expected. Your strength has improved."
Chapter 546