[Ucchii is always ready and willing to help someone in need, and even more so if he considers that person a friend.]
Wait just a moment.
[He lays his jacket down by Yuuki's head, within easy reach if she wishes to shield her eyes from the sun while he works. A nicely sized piece of driftwood floats near their rafts which Ucchii fishes out of the water and breaks in half over his knee. He props the pieces up on either side of Yuuki's head and drapes the jacket across them, creating a bit of shade for her to lie in.]
Hopefully you will be more comfortable like this.
[He starts looking for a rope to tie their rafts together.]