Roxas sees in between the moments.
He's not sure when he first came into existence. Maybe he's always been there. Everything before Hollow Bastion is a blur of memory not his own, and yet so familiar. But what he remembers isn't quite the fact of what happened. Actions always thought and never said flicker across his memory. Every harsh word Riku spoke to him… them… he saw his fingers reach out and squeeze the lies out of a pale throat. Squeezing tighter and tighter, full rage, hate, and such, such pain. But that's not what happened. There were only tears never spilt and childish retorts. Then there were the times where he would feel such a longing in his heart, a heart wishing to meld and become one with another's. His hands would tangle in long silver silk and lips would press desperately against Riku's, wanting, pleading.
Then they split off, he and Sora, and he could see even more clearly than before, but without a heart, he didn't understand or care. Maybe that's what they were, nobodies, before the time without a heart. They were the innermost deliberations of their other halves, seeing what was to be kept hidden. Then he and Sora went from 'we' to 'me' again, and it began to come together. The rage rested deeply, but not deep enough to hide. However, nothing could hide from his eyes, and Roxas saw how much Sora – they – hated the fight and everyone who pushed him into this corner. There was blood spilt before his eyes, but again, it would never pass.
Their war over, Sora tried his hand at life again. Brushes of hands on sunset docks were the kisses never shared. Cavernous and rough, and by God, Riku kissed back! But it never actually happened – they just shared glances that were feelings wrapped in a package too tiny. Hugs were embraces much deeper and sinfully sweet. The fleeting seconds in between reality were far too small, and Roxas saw every non-instant. Every moment with things hidden deep inside. Not hidden, he realized. Just hard to see. Every time just needed a little push.
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"Why… did you just…""I don't know, it just happened." A pause. "I'm sorry."
"Don't be."
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The lines between the moments were blurring together. Roxas smiled.