Now now, KS is a good player yes, but a video doesn't give me a logical explanation. you know, in words. :|
I could copy him, but then I'd just be copying KS instead of understanding why, avoiding said scenario being the entire reason I picked up Mitsu in the first place.
I'm quoting from LAU:
"KS truly is the master or Relic stance... it's kinda hard to express how well he uses this stance.. all of us knows that it counters only mids.. and high/low moves will kill it.. but if you look at how KS uses Relic... if you do a low move he'll either 1) outspeed you with RLC A or 2) outspeed/step you with RLC B .... not to mention there's RLC jumps but this is rarely done... if you do high moves.. well you can see the vid and realize what he does against it.... if you simply just LOW guard.. in hopes for RLC [K] blocked (which basically doesn't do crap blocking that low since he can RLC A to beat out nearly all your followups and if he can't RLC A he can RLC GI the rest... -_-.. and yes this is on BLOCKED RLC [K]) it makes things kinda tough."
As for the RLC UB game - quoting from KS:
"I don't buffer relic GI, I just time and parry the attack visually. While I'm charging UB, I already got lot's of time of observe my opponent and see what he will do, so is not hard to react to it.
Also when I'm charging UB, I don't plan on which level I will release the UB initially. I simply hold on to the button and release until the time is right.
E.G if I start charging, and my opponent react fast and make a move (step, attack) I will release immediately for level one.
if my opponent simply freeze, then I will do release at lvl 2
if my opponent response by moving out of lvl 2 range, then I have two option, either I release lvl 2 and bait for UB or relic B. Or I keep holding for lvl 3 for max range.
if my opponent response by moving out of lvl 2 range, and I keep on holding for lvl 3, and I see that he didn't fall for that either (meaning he is ready to punish my lvl 3 by backing even more) I will keep charging lvl 3 until it return to lvl 2 UB (if my opponent is planning to punish my lvl 3, then he will be to far away to punish my lvl 2 UB most of the time, because lvl 2 punishing window is relatively short)
and lastly, if my opponent already step my lvl 2 and want to wait till I release it for major punishment, I will keep charging to lvl 3. (LVL 3 will re-track my opponent)."
There's a lot to digest...
:)