"Stupid, stupid demon!" Alec Lightwood shouted from his perch on the wall of one of the buildings in New York.

"I know right," Jace Herondale shouted back while slashing at the greater demon with seraph blades. Jumping back he flipped backwards and landed on one of the fences, making enough room for Alec to shoot at the greater demon with his bow with his electrum tipped arrows. Suddenly a giant spout of water shot out from nowhere, making the demon dissolve into sandy stuff, and making Jace and Alec sopping wet. A tall-ish boy with shaggy black hair and sea green eyes wearing an orange t-shirt stood there holding a gold sword.

"Who are you?" Jace said snottily.

"Percy Jackson, you?

'Jace Herondale, and that," Jace pointed at Alec, "Is Alec Lightwood. We're Parabatài." He added proudly.

"Para-what?" Percy said confusedly.

"Never mind, what were you doing slaying my demon!?" Jace said angrily.

"Your demon? That was so my demon, but whatever" Percy said coolly. Alec jumped down from his perch and asked, "What branch of shadowhunters are you from?"

Percy just looked confused.

"I'm the son of Poseidon, the god of the sea. I'm a demigod." Percy said.

"Alec giggled slightly saying

"Like a fish?" In response Jace burst into laughter, and said

"You are a fish-man!"

"He's not a fish man." came a sullen voice from behind this newfound Percy. A teen stepped in front of Percy, as if he was protecting him with his scrawny body that was clad all in black. He radiated a death like presence, making Alec step forward out of curiosity.

"who are you?" Alec said, intrigued.

"Nico, Nico Di Angelo," he replied. Alec just stared at the scrawny teen in wonder,

"And who are your godly parents?" He said mystified.

"Its godly parent, meaning only one parent, and mine is... Hades, the god of the underworld."

"The god of death and gems?" Alec said knowledgeably.

"Yea," Nico said surprised.

"Enough with exchanging phone numbers and date hotlines, let's get back to business," Jace said, who had not been paying attention at all.

"We were not doing that!" Alec said embarrassed. He and Nico both blushed at the same time.

"Any way I'm with Magnus Bane, the High Warlock of Brooklyn. And he throws the best parties ever.'' Alec said proudly.

"Your gay?" Asked Percy.

"Yeah, so deal with it" Alec said defensively.

"Cool it man, Nico's gay too and he's my BFF" Percy replied happily.