Thank You, Water (A Free! Fanfic)

Shizue Sakura, a young boy, was talented at swimming at a young age, but during Middle School, he was bullied by some classmates, and one prank of theirs went really wrong.

Ever since that day, Sakura was unable to touch the water. As time passed, he got used to showers, washing his hands but not taking baths and the thing that hurt him the most: swimming pools.
Every time he manages to get into a tub of water, the water around him haunts back to that prank, and he would claw his arms until it bleeds.
He tried every time, in vain.

Now his arms are covered with scratches and scabs. He's scared. his sanity shatters to pieces, as both body and mind are covered in ugly scars.
But he still wants to swim.
Life was hell until Haruka came in.
He made Sakura petals fall on the pool.
He wants to start swimming again.

Arigato, Mizu...
Thank You, Water...