Introduction[]
Feat in this quote:
"Mukuro placed her two hands on <Michael> as she turned its tip——“<Michael>—— <Lock-Segva >!” Towards the ground——no, she inserted the key towards the Earth and turned it around. At that moment, with that location as the epicenter, vigorous earthquakes started to propagate through the periphery. For the people who were standing there, it gave the impression of being near an industry-scale drilling machine. It was as if the Earth had transformed into some sort of planetary creature that was pulsating. The tremors began to encompass the nearby surroundings. “…Tsk!? Wa, what!? “……W-What’s going on!?” “Predicament. Is this an earthquake?” Shidou and the Spirits were stunned by the loud noise ringing their eardrums. Mukuro gave out a gentle smile as she stroked Shidou’s face with her hand. “No longer…… need thou worry. With this…… none shall pester us.” “Mukuro……? What did you just do?” “——To this Earth, <Lock-Segva> hath been cast. Howbeit, a few ticks of the clock seem to be of necessity in the wake of its vastness, albeit in ultimatum, this celestial body shall cease all motion.” “What?” Shidou was momentarily stunned as he stumbled on his words. However, Mukuro did not appear to notice Shidou’s expression, her smile becoming more unnerving as she continued to speak. “Thus, all beings which cumber will perish. Nushi-sama shall with Muku bear company in the cosmos for aye. Hehe…… What eagerness.”" ― Mukuro Hoshimiya to Shido Itsuka
So, Mukuro is able to stop the rotation of the Earth with her powers. I will calculate that.
Calculation[]
Formula taken from here: https://physics.stackexchange.com/questions/169589/how-much-energy-would-it-take-to-stop-earths-rotation-on-its-axis/169593
Earth's Rotation Formula: K = I*w^2
Where I: Earth's moment of inertia = 8.04e37 kg.m^2.
w: Angular Velocity
Timeframe = 1 second (Since it was stated to be At that moment).
Using this calculator: https://www.gigacalculator.com/calculators/angular-speed-calculator.php
w = 6.283185 rad/s.
K = 8.04e37 * 6.283185 = 5.05168074e38 Joules = 120.77 Ninatons of TNT (Dwarf Star level).
This scales to all AAA- Class and S-Class Spirits that fought Mukuro, namely Kurumi, Tohka, The Yamai Sisters, and those who are above them, not including those who are lower than this like Yoshino or Kotori.
Note: While Kotori did indeed harmed Kurumi, this was mostly due to her entering berserk, so this should account to her when she goes berserk by time, as she goes berserk by time when she continues fighting.
Final Conclusion[]
Mukuro stops the Earth's Rotation instantly = 120.77 Ninatons of TNT (Dwarf Star level).