12:20
https://www.youtube.com/watch?v=jZVOkeat6cM
Her brush reaches the galaxy in about a second. The nearest galaxy to the Milky Way is 2.2 million LY away
2200000 * 365 * 24 * 60 * 60 = 69379200000000c or 69 trillion times faster than light. Wasn't expecting it to be that high, but not complaining
Can't find RKE of the Milky Way, so rough calc for that
Average Milky Way rotation speed is 230225.6 m/s
Mass of the Milky Way is 6.0e42 kg
Amaterasu overpowered the galaxy's RKE, so.... KE = 0.5 * m * v^2 0.5 * 6.0e42 * 230225.6^2 = 1.59011481e53 joules or 1.59 gigaFoe Value should be higher, will revise it with other methods later but for now there's a good value to work with
Final Tally: Amaterasu's Celestial Paintbrush Speed: 69379200000000c
Amaterasu Spins A Galaxy: >1.59 gigaFoe