Worlds Collide (Riordanverse Crossover)

Magnus

I walked in on Nico di Angelo attacking Will and Jaz. Alex was behind me, her green hair covering her eyes. "SAM!" Alex grabbed Nico by his shoulders. She was almost immediately flung into the wall.

"Alex!"

"Magnus, watch out!" Will shouted. I ducked, and a black sword swung above me.

"Die...die...die..." Nico whispered as he attacked us. Jaz scooted out of the room, Alex behind her.

"Nico, stop!" Will said. "We're your friends!"

"I don't have any friends" Nico spat. I looked at him. Something wasn't right... but I couldn't figure out what was wrong.

Piper and Percy ran in the room. "Eidolons again?" Piper huffed.

"What?" I asked.

"Possessing spirits" Percy replied.

"I guess so"

Nico roared and tackled me. His sword pointed downward at me. "Die"

"Nico no!" Percy and Will leapt toward Nico and pinned him down.

"Nico, look at me" Will said, his voice shaking. "Look at me!"

"Eidolon!" Piper shouted. "Leave!"

"Never" Nico hissed. Well, I guess the eidolon hissed. He kicked Will's stomach and shoved Percy off him. "One of you must die!"

Will, Percy, and I looked at each other.

"Try not to hurt him" Percy said. "On the count of three, we all go for him. One...two..."

"THREE!" The three of us flew toward Nico. Nico held his sword out in front of him, and swung blindly. Percy uncapped Riptide (which, according to Jack, is a girl) and swung her into Nico's sword.

"Eidolon, what about you leave us?" Percy asked.

"Fine" The eidolon replied. Nico turned around and stabbed his sword into Will's abdomen. Piper let loose an ear-piercing cry. Nico turned to look at us, then collapsed onto the ground.

"Magnus, you get Will" Percy said to me. I nodded and walked over to him. Will Solace did not look good whatsoever. Plus, with Nico's sword sticking out of him.... 

"Percy, he's dead" I said.

"What?" Percy looked at me like I was crazy. "You're joking, right?"

"I wish"

Nico stirred. Piper left the room, tears falling from her face.

"What happened?" Nico asked.

Percy shifted uncomfortably. "Uh..."

"Someone died" Nico said. "Who the hell died?"

"Will" I said. I turned around to leave when Jaz, Sadie, and Alex came back in.

"What the bloody hell happened?" Sadie asked. Then she gasped. "Is he..."

"Dead? Yes" Percy said. 

"Percy, this is why I can't be by people!" Nico said.

"It wasn't even your fault, dude" Percy helped Nico up. "You weren't you"

"Don't tell me you killed him, Nico" Alex said. "Please don't" Nico disappeared into the shadows.

"Nico, get back here!" Jaz yelled. "Nico!"

I looked sadly at Will's body. "Where's he going now?" I asked.

"Hopefully, Elysium" Percy said.

"Is that a good place or a bad place?" Jaz asked.

"Obviously, a good place. Why would Will Solace end up somewhere terrible?"

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Sorry

@JapanesePenguin, @Apocalypse_Cow, you knew this was coming

Question of the chapter: Where do you think Will went? Elysium, the Fields of Punishment, or the Fields of Aphodel?