Sasan only appears during the side quest "Special Delivery". It is revealed that he is the person who has been responding to letters from the Zora Finley who has been sending them down river in the hopes of finding her soul mate. It is said if someone replies to a letter sent down from the Bank of Wishes they will be the senders forever. After defeating Waterblight Ganon and freeing Vah Ruta, Link finds Finley at the Bank of Wishes and she asks him to follow it downriver to find out who has been replying to her letters. Link follows the letter and finds Sasan who travels to Zora's Domain to meet Finley after Link talks to him. Back at Zora's Domain Link can speak to Finley and Sasan who reward him with a Gold Rupee.