Some more Korekyojinn albums: ST (1999), Arabesque (2004)

 

As mentioned earlier, they play a kind of furious electric instrumental dissonant prog, like a more hyped-up adhd-like borderline bipolar Fripp, less accessible though, almost improvised, leaning a bit too much into the free jazz direction. 

Discogged here accompanied by the description:

Korekyojinn is a progressive jazz rock polyrhythmic ensemble, founded in 1998 by drummer Tatsuya Yoshida. They released albums on Tzadik and Magaibutsu. The band's name is translated as This Giant (as a pun to This Heat and Gentle Giant, two main influences of the band).

It's a bit of an odd combination to put together those 2.  But I would say right off the bat I don't detect much GG influence, and that's too bad because obviously we who love prog adore Gentle Giant.

Gibraltar, taken from the second release: