War plan

Dozens of times faster... Upon hearing this sentence, Holak furrowed his eyebrows for a moment

In fact, the soul strengthening method he's currently using is not bad at all, as it is still a technique invented by a Truth Master Law user, but in the end, it is an initial technique that was not invented as a side thing to amuse the second heaven's chosen and expand his horizon, it was not his main field of research. So if it must compared with another soul strengthening method, it could be compared to Robin's first copy of the Soul Strengthening Technique

But that technique developed over the years and Robin focused a lot on it, and in the end, it witnessed significant development after Robin knew the source of the soul force and made the largest modification to the technique since its creation... Saying that it was tens of times faster than any ordinary soul technique was not an exaggeration.