Percy:
It was in the middle of the night and Percy was on the beach all alone. He had taken a quick swim, even though it was a quite cold night. He was a son of Poseidon, so his skin and trunks were dry when he left the water and sat on the beach. They view of the full moon, which lit the whole beach with a soothing light made him remember his time with Artemis.
He couldn't help it and slid his hand in his swim trunks and started to slowly rub his hand up and down his entire length. He rubbed his thumb in small circles around the head of his cock and was completely hard almost instantly. He squeezed his fist around his shaft, which caused him to moan quietly and slowly stroked from the base to the tip, forcing some precum out until it started to slowly drip down the head. The more he stroked, the more precum oozed from the tip of his erected dick, which he used as some kind of lube so he was able to pump faster without any discomfort.
Percy continued pumping his cock and he was getting close to an orgasm. He felt how pressure kept building deep inside his groin, at the base of his cock and in his balls. He moved his free hand, which had rested in the sand next to him, down to his tightening balls and started to gently massage them without missing a stroke of his hard rod.
Percy thought about everything that occurred in the last months - he thought about how he made love with Annabeth, had sex with Sally and fucked Piper, Thalia, Hazel and Calypso. The son of Poseidon thought about how they moaned his name and screamed out when they reached their climax.
With a last stroke and a heavy grunt Percy found his relief and spread his cum on the inside of his swimming trunks - he should have gotten rid of them, now he had to wash them…
The son of Poseidon got up from his sitting position and walked back towards his cabin. When he entered it the first thing he did was getting rid of this cum-covered shorts. He let them fall to the floor and stepped right above them on his way to the shower. Percy stepped into the shower cabin and turned the hot water on. He took his blue soap and started to wash himself off of the reminders of his previous actions.
This didn't go as planned thought, because as he soaped up his crotch his body naturally tried to pick up where he had stopped earlier. His cock sprung back to life the moment he touched it and he started pumping it, using the soap as lube. It always took him forever to cum in the shower, or in water in general - he suspected it had to do something with the water increasing his stamina. While he stroke himself, his thoughts went back to his sex live - to the hard fucks, the threesomes, the toys he used with his partners and of course to his partners themselves - both female and male.
He imagined Annabeth kissing him and Artemis's hands on his shoulders as he pounded into her. He pictured Sally stroking his cock and fucking his cousin Thalia senseless, while he thought of the sensation of Paul's dick stretching his tight asshole. He moaned at the mental images and quickened the pace his hand slid up and down his cock. He rubbed, twisted and jerked on his dick until the need to relieve himself was almost unbearable. He squeezed his shaft a last time forcing another load of cum out of it, which came out with such force and speed it colored the grey tiles of his shower white.
Percy breathed heavily and took a moment to recover under the hot steam of water. As he felt ready to move again he quickly cleaned himself and the shower before leaving his shower cabin to dress himself and go to bed.