Percy's mind drew a blank. Of all things in the world, this was too much for him to comprehend. It had been hard enough to learn about Tyson, but this was much more overwhelming. He didn't know what to do or say, so he did the intelligent thing and stormed out.

He walked down and threw himself into The Little Tiber. It probably looked strange, but it was the only place nearby, where he could sit alone and think. The only ones on the bottom the river were the Naiads, and they knew better than to disturb him when he was in a mood like this.

Truth was, that he was angry. Not even angry, he was incandescent. He wouldn't be surprised if the water started boiling around him.

He was angry with his father for being with another woman than his mom. He knew it was stupid though, and that he was being childish. She was still a couple of years younger than him. When it came to stuff like this, gods were weird. They could have multiple partners, and even be in several places at once. The size of Cabin Seven was evidence enough of that. They would need an expansion soon, if they ever returned to Camp Half-blood.

But she didn't even look like him! He thought petulantly. Then again, Jason didn't look like Thalia. And Hazel didn't look like Nico… Nico, that little shit. He had known. He had known about Camp Jupiter and hadn't told anyone. And now he had a sister, and Nico had known?

He felt betrayed, and deeply hurt.

Suddenly his sanctuary was disturbed. It felt like a current was grabbing hold of him. Taken by surprise, he didn't have time regain control, and before he knew it, the river spat him out on the bank.

He rolled over onto his back, and glared up into the unimpressed face of his new little sister.

"Are you done sulking?" she deadpanned.

"Where is Nico? I need to ask him something."

Hermione looked at him suspiciously. "Still at the principia with the others. I volunteered to get you."

"Let's get back inside then"

He strode purposefully back towards the principia, leaving Hermione at the river bank. Once inside, he walked up to Nico di Angelo and punched him in the face, without hesitation. "HOW LONG HAVE YOU KNOWN?!" He bellowed.

Hermione walked in and gasped, when she saw the blood on Nico's face. She ran to him and turned to her brother with a thunderous expression, and ground shook with the faintest tremor. That got their attention.

"It was not our choice." she growled lowly. "Now, we are going to the infirmary, to fix Nico's nose. You guys are going to stay put until we get back and we can discuss this, like civilized people, or so help me, this building will not be standing by tonight. The earth gave a small after shake as an emphasis. With that, she took Nico's hand and they walked out, leaving a stunned group of people behind.

...

Infirmary, Nico thought. Crap.

"Um, Hermione, before we get to the infirmary, there's something you should know." he started, but she was distracted. Dragging him along, looking for signs to the infirmary and muttering things under her breath like, "idiot relative" "Neanderthal" and "as stupid as the kelp he is swimming in"

In the end, he decided to just stop abruptly, making her stumble comically. He smiled a little, but it turned into a wince, because damn that hurts. Percy packs a punch!

"Hermione!" "What!?" she snapped.

"I just wanted to tell you something. There is this healer working at the infirmary. We were dating a while back." He really tried, but he seriously could not imagine a worse place, for this conversation.

"Okay? But not anymore?" her eyes softened

"No, not for a while, but it's just that he's a guy. It's not because I don't like girls, I just –"

"Nico," she interrupted gently, with a small smile. "I know" He looked into her eyes and realised, that maybe she really did know.

"Now, which way to the infirmary?"

He pointed in the direction they had come from, and led her through the streets.

...

The infirmary or the Valetudinarium, was made almost entirely out of white marble. It was light and airy an smelled like disinfectant. A far cry, from the tiny infirmary at Camp Half-blood, which was his old territory. Will Solace had worked there for a year and a half now, but he still hadn't decided which was better. At least he was closer to his boyfriend.

He had been standing at a desk in the entrance hall looking through some paperwork, but was interrupted, when none other than his ex, Nico walked through the doors, with a what looked like a broken nose. At his side, was a girl Will had never seen before. They appeared deep in conversation. Nico pointed to the various frescoes on the walls as if explaining them to her. Not a local girl then.

"Hey Nico!" He decided to call out, walking down the steps to meet them. "Which wall did you run into man?"

"Percy Jacksons fist." he mumbled.

"Ouch!" Will winced. That couldn't have been fun. He asked them to follow him up the stairs into one of the wings.

"So, what did you do to deserve such a special treat from the son of Poseidon?" Nico looked to the girl, as if asking for permission. She hesitated, but nodded eventually. He pointed a thumb in her direction "The daughter of Poseidon." He looked at Nico and the girl curiously. "You've been doing the daughter of Poseidon?" he asked with a lifted eyebrow.

Nico's cheeks heated, when he realized he should have probably elaborated. Luckily Hermione saved him.

"What the idiot means is that he kept my existence a secret for the past five years, by the order of Hades and Poseidon himself. Actually, we should have probably told Percy that those two were involved, now that I think about it." she said pensively.

"I'm Hermione Granger by the way. Daughter of Poseidon" She stretched her hand towards Will.

Will shook her hand, and his mouth stretched in a grin. He looked to Nico. "She's British, and calls you an idiot. I approve" he said, winking at him.

Now it was Hermione's turn to blush.

"Now, let's check out Percy Jackson's handiwork." Will continued and led them to an examination room, where he ordered Nico to sit on the bed. Nico obliged, looking like he had gone through the action a million times. Which he probably had, Hermione thought.

The nose was broken, to no one's surprise. It was an easy fix though. Will gave him a bit of ambrosia, and a small splint across the bridge of his nose, to wear until the ambrosia had done its magic.

He made to leave, but Nico stopped him.

"Would you do me a favor and stick around?" He asked seriously. "We need to talk about the whole Zeus thing at the principia and we could really use your input."

"What could you possibly need me for? I suppose you're going to make battle plans. I'm a doctor, I don't do battle. You know that."

"I know, but this is more of a diplomatic issue, and we could probably use the help of Apollo."

Will sighed. "Diplomacy really isn't my dad's forte."

Hermione looked at Nico and wondered what kind of plans he hadn't told her about.

"Isn't yours either, as far as I recall." Nico bantered with a smirk.

"Alright, I'll help." Will grudgingly relented. "Just give me a minute to find someone to take over."

After he left the room, Nico surprised Hermione, by taking her hand and kissing it. I was overwhelming and her heart was racing, pounding in her chest, like it was trying to break out of her ribcage.

Nico looked up at her from the bed, trying to read her reaction.

She was too flustered to speak, much to Nico's satisfaction. She tried a couple of times, but failed, making her blush a bright crimson.

He started reaching the other hand towards her face, but were interrupted, when Will stumbled through the door.

"Lets go then" He grinned, perfectly aware that he had probably interrupted something.