Rui intended to meet all of the conditions for becoming a Martial Senior, and he had a plan for almost all of them.
He wasn't far too concerned with the condition of building up enough individuality to be able to bring out the true potential of the Martial Body; the Martial Heart. Individuality was something he rocked at as a Martial Artist for various reasons.
A lifetime of experience, a lifetime of knowledge from another world, and a particularly sharp mind meant that he could exercise his creativity and produce something that was not only original but quite unique as well. It meant that as long as he didn't grow overconfident or lazy, and continued applying and exerting himself to add more individuality to his Martial Art, he would certainly cross the threshold where his Martial Heart would have been unearthed, and needed to only be triggered.