Sonic the Hedgehog House of Iblis: Relics of the Past

Relics of the Past is the fourth chapter of the fourth series of Sonic The Hedgehog: House of Iblis , and the thirty-fourth chapter overall.
==Overview==
Knuckles collects the Chaos Emeralds from Angel Island. Sonic and Sally discover Nega's true origins. Tails looks for Cosmo and Cream. Cosmo wakes up. Shade meets someone.
==Included Characters==
Sonic the Hedgehog
Sally Acorn
Knuckles the Echidna
Cosmo the Seedrian
Miles "Tails" Prower
Shade the Echidna
Big the Cat
Julie-Su the Echidna
==Synopsis==
"Guys, I went to Angel Island, and got the Chaos Emeralds." Knuckles said.
"That's great Knuckles!" Sally exclaimed.
"We need to keep looking through Eggman's database." Sonic said.
"Hey, Big, have you seen Cream anywhere?" Tails asked.
Big the Cat replied. "No, I haven't. I haven't seen Cosmo lately, ether."
"Hmm. That's weird." Tails replied.
Later, Sonic and Sally were in Knuckles's room in Gaia House.
"Sonic, there's another thing in the database. It's about Nega." Sally said.
"What's it say, Sal?" Sonic asked.
"Eggman Nega is Doctor Eggman's...." Sally began, reading.
"His what?" Knuckles pressed.
"It's conflicted. The first entry states he's from the Sol Dimension, but an updated entry states he's Eggman's descendant from Silver's future." Sally told them.
"That's weird." Sonic said. "But does it say anything about him working with anyone?"
"No. Just that he worked with Eggman to fght you and Blaze." Sally said.
"Yeah! I remember that!" Sonic said. "It was such a long time ago..."
"Cosmo!" Tails called. He went into her room.
"She's not here." Julie-Su said.
"Then where is she?" Tails asked.
"Don't know. She told me she was hanging out with a friend. Here's the letter she left." Julie-Su said, handing him a note. Tails went into Knuckles's room.
"Guys...I need you to see if there's anything odd about this note." Tails said.
"Hey, guys.
Enjoy your stay at Gaia House.
Left to the Train Station with Cream.
Please feed Cheese while we're away.
Many thanks, and have fun. 
Enjoy Big's food as well.
-Cosmo" Tails read.
"Um..." Sally said. "Why does the first letter of every sentence spell out...HELP ME?"
"They're in danger!" Tails said.
"We should head to the Train Station." Knuckles said.
"Right. Let's go. And we should get Blaze." Sonic said.
Shade drove up to the Train Station. She had a crate in the back of her truck. Shade put it on the Radical Train.  Someone in a black hoodie walked up to her.
"Hey, give me a hand and help me get this on the train." Shade said. Then she got a text.
"They're coming. If they want Cosmo back, let it be." Shade said.
Cosmo woke up in a confined space. "Ugh..." Cosmo said groggily. She was bound. Cosmo turned her head left, and saw the body.
"Ahhh!" Cosmo screamed. "Somebody! Help me!"