Please write a vividly detailed Genshin Impact story about Arataki Itto hopping into a pond in the nude (vividly describe his face, physique and butt). Describe how he looks as he forces out a pent-up fart into the waters. He's visibly enjoying the relief of letting out all that gas. He jokingly acts sorry as the fart bubbles and fish who died from inhaling the stench surface behind him. descirbe how he looks as he jerks off as he fantasizes about how the fish felt seeing his nude butt and suffocating on his farts, describe the images Arataki jerks off to, describe how he looks as he orgasms finally. Add dialogue from Arataki throughout the story