When it became clear that the Gatekeeper had no easy solutions as to how Rui could mitigate the risks, Rui had to make a choice.
Was he to go on and take the risks anyway, or would he go for the safer option?
It wasn't an easy choice, not at all.
He truly wanted to gain the power of a Mind Metabody. Not even he could imagine just how powerful it would be due to its enormous compatibility. It had the potential to be for him what Fulminata Godspeed was to Kane—a technique that amplified his greatest strengths.
He truly wanted to explore it to its greatest limits without needing to worry about rupturing his blood-brain barrier.
However…
"The risks are too high."