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He was just supposed to deliver a letter.
Now that Percy Jackson had rejected their offer of godhood to make them acknowledge their own children, Poseidon seemed to want to spend more time with his only mortal son. Of course, it was Hermes' responsibility to carry the messages filled with Poseidon's special pearls to the boy so he could visit his father. This was such a usual occurrence the past four months that the messenger god thought nothing of it when he materialized in Percy Jackson's room to hand the boy the letter that contained a short note and the pearls.
He wasn't expecting to see this.
"Yes!" Percy Jackson was face down on his own bed, the very recognizable visage of the sun god thrusting behind him. "Please more!"
"More?" Apollo mused. He thrust sharply, making the young teen under him gasp sharply. "Do you deserve more, Percy? You were being so disrespectful earlier...."
Hermes stared, Apollo had to know he was here. The presence of a god was unmistakable, certainly unmistakable when said god appeared so suddenly as Hermes had just done. Then his brother looked up, one hand holding Percy Jackson's hands pinned to the mattress in front of him. Hermes understood immediately, Percy wouldn't notice Hermes watching with his face pressed against the mattress. Hermes was free to watch.
The messenger settled into the horribly small armchair that was in the boy's room and settled in to watch the free show. The show was certainly worth the perversion he was engaging in, Percy Jackson on his knees and bent at the waist, his shoulders touching the bed while Apollo held the boy's hands at the base of his spine. Apollo was as beautiful as he had ever been, the perfect picture of male youth, resting his knees behind Percy's and his muscular stomach on display.
Percy clearly hadn't noticed Hermes was there, because he kept babbling pleas and promises to Apollo as the sun god teased him, "I'm sorry, Apollo, I'm sorry... I'll be good, please, please, fuck me harder."
Hermes kept in what threatened to be a sharp gasp, which would surely alert the hero to his presence. He thumbed open the buttons on his pants, pulling the zipper down to free his rapidly hardening cock. How long had they been doing this? For the normally (and admitting amusing) disrespectful hero to be so...subservient? Poseidon was going to kill Apollo.
"Haven't I taught you anything, Percy? I set the pace, I've decided you're going to take my cock nice and slow today and you're going to thank me for it." Apollo thrust, slowly of course, and Hermes was treated to the whimpers and whines of the Hero of Olympus, the way his toned muscles flexed and squirmed.
"Yes, thank you, thank you," Percy babbled incoherently now, making Hermes wonder how long they'd been at it before he'd appeared.
Apollo met his eyes from across the small bedroom, Watch, his eyes said. Their communication was flawless after thousands of years of friendship. He stopped entirely inside the hero, the boy giving more delicious whines. It didn't matter which way he moved, Apollo held his wrist firmly behind his back, occasionally placing a hand in his hair or on his shoulders.
"Please, please let me come...."
He was not allowed to? Apollo, Hermes thought, giving his brother a chiding look. He's sixteen, that's just cruel.
"I told you," Apollo smirked, looking directly at Hermes. "You can come anytime you want as long as I'm inside you."
The messenger god swallowed. Fuck.
Percy squirmed, making Hermes wish he had the view Apollo had from behind the delightfully slutty teen. "Please, I can't...I need you to move.... Apollo, please...."
"Is my cock not enough for you? Surely you aren't so greedy as to think you can demand things of me?" Apollo scolded, smacking the hero's ass with his free hand.
Percy yelped, squirming even more now. "You're enough...you're, fuck, more than enough, Apollo, please. Touch me, please touch me."
Apollo reached under the son of Poseidon's chest, it becoming entirely clear what he was doing when the cried out, shifting under the attention Apollo's hands provided. Thankful, he never moved his head to look straight in front of him, when Hermes was sitting, slowly jerking his hard length to the sight in front of him.
"I'm touching you just like you asked me to Percy. What do you say?" Apollo taunted.
"Thank you, thank you," Percy panted.
Hermes wished he could see the hero's face, what a sight it must be while twisted in pleasure, especially while being denied any stimulation on the most sensitive part of his body. He watched as closely as he could manage as his brother pinched and pulled at his lover's nipples, occasionally taking a detour further down to gently graze his cock only to pull his hand completely away moments later.
"Such a sensitive little slut..." the sun god mused. "One of these days I'm going to tie you up and see how long it takes to make you come through nipple stimulation."
I want to watch when you do! Hermes thought furiously. He truly pitied the boy, he was wishing now that Apollo would speed up so Hermes could come with them.
Percy whined, thrashing desperately in the grip Apollo held on his hands. "Please, please...."
"Please what, Perce? Use your words, sweetheart, or I can't help you."
"Wanna...want you to...."
"Fuck you harder?" Apollo suggested helpfully, finally choosing to pull out fast and slam into the hero's hips harder than he had before. The scream that slipped past Percy Jackson's lips would forever be in Hermes' fondest (and sexually pleasing) memories. But Apollo was not done talking. "This what you were begging me for earlier? Harder, faster, more. Say it, beg me."
"Please, Apollo - everything you said, ev-everything you can give me. Harder! More - faster!" The writhing teen on the bed repeated obediently.
Sensing an end, the messenger god began jerking his hand faster, watching Apollo's harsh thrust and listening to Percy's labored breathing and occasional begging. The young demigod came with a hoarse scream, the corners of his eyes pinching shut and clenching down on the god inside him. It didn't take long for the other two to follow him into bliss.
Panting, Hermes leaned back in the chair. He should leave soon, there was no way Percy would stay face down in that mattress for much longer. As he righted his clothing and stood to leave the god startled. Percy Jackson wasn't face down anymore, in fact, he was staring straight at Hermes.
"Uhh...." the normally smooth-speaking god found himself at a loss for words.
Percy didn't seem upset with him, he wasn't angry or demanding to know why he was there. He wasn't yelling at Apollo, instead, he was leaning against his lover, allowing the sun god to clean him off with a wet cloth he'd clearly conjured while Hermes wasn't looking.
"Did you enjoy yourself?" Percy asked.
Well, at least Hermes knew the answer to that question. "Absolutely." And also, "Can I come by again?" He was still confused, but an opportunity he couldn't turn down had just presented itself.
"Absolutely," Percy grinned back.
Apollo, however talkative he'd been earlier, wasn't saying anything but if he'd had any protest he would've spoken up so Hermes figured everything was okay.
Deciding to take one more bold risk, he dared ask. "And can I get a kiss?"
"If you can wait until next time you can get a blow-job." Such sass, Percy, such sass.
"Well, that certainly is worth waiting for."
Hermes disappeared, leaving the lovers to their aftercare and a thick envelope on the chair he'd been sitting in.