[Free] Lost

Blue water enveloped the frail child as a vast darkness crept up behind him, as if it were about to make him disappear.

Ahem... Just to make this clear beforehand: although the protagonist has traveled here from another world, he knows nothing about the plot. Of course, just like in the original, he likes swimming. The plot won't change much, but if things go differently from the original later on, you really can't blame me!!! ::>_