That has Shisui laughing despite himself. I just didn't want you to drown. No shit. His very name was his own epitaph, and-- yeah. He's laughing some more until he sputters out the last remaining bits of sand.

"You probably wouldn't have been able to avoid it even if you tried," he says, making to stand and immediately feeling a sort of run-over-twice-by-a-large-bus sort of pain in places he's almost forgotten he had. "I believe I drowned before I got here." He's quite sure he was still alive by the time he hit the water, so it wasn't the poison that killed him. "It's sort of like my destiny or something. I really don't know what my parents were thinking when they named me."

It was easier to make light of a situation. He'd found that that approach seemed to always work calm him down enough to process everything objectively.

And right now, as he proceeds to demonstrate, Shisui discovers that he is quite able to walk.