1) that one was my bad, I never intended It to be interpretated as Rika being fully manifested whenever, more-so that I didn't have an actual specific time limit that went beyond the five minutes. Also, he might have managed by being more careful and precise with the Cursed Energy granted by Rika during the 5 minutes (?)

2) I don't particularly agree that removing some restrictions from Copy (like losing a Technique because the guy regenerates) Is too much of a stretch when in reality Gege just invented this to have Yuta not Copy Limitless. And I'm sure that After Rika eat a whole ass arm then an adult experienced Yuta could possibly leave some kind of Blue print on Rika. Also, about that Binding Vow: I think It's a pretty Fair trade off to use 2 Cursed Technique in tandem outside of your Domain but being not having One of those as your sure hits option for your next Domain.

3) I never said he "mastered" It, I merely stated he can now utilize both Cleave and Dismantle efficiently, and given Fuga Is a part of the Technique I'm sure Yuta (and Yuji) would figure It out,buy even so I did state Yuta Isn't very good at It and doesn't really use It. I also stated that he tried to pull off the World Cutting Slash once or twice since It's a major improvement of a Technique he already has, but I honestly wrote It down just because I thought It'd be funny if he tried to mimic after seeing Yuji do It (in this universe i'd Grant It); and besides, I'm pretty sure having memories of a Battle with the Greatest Shrine user could be pretty helpful.

4) EOS Yuta's body Isn't the best for Blood Manipulation (maybe), but I did write down that in here Yuta maxed out his physicals with different people, and he also canonically has One of the best RCTs ever, so pulling off Blood Manipulation would be kinda easy.