I love the way you write Riku here, almost self-aware enough to stay in control but still afflicted with all the flaws he can recognize in his other self, and so lost, the poor baby, yearning so hard for something he doesn't believe he can ever have.
And the line to him a feint is something that happens when you miss and you want to explain it away just really struck me as perfect -- such a great summation of his bravado and the awkwardness underneath it.