Severus instantly put silencing wards around him and Harry.
"Ssshhsssayyisssehsss" Harry said. Parseltoungue, great.
"Harry, I can't understand what you're saying, please speak in English.
"It hurts. It all hurts." Harry sobbed, this time in english.
"I can help you, just calm down."
"No" Harry said, and Severus saw his arms… start dissolving. Clearly Dumbledore as this, as he started to silently urge Severus to break the silence wards.
"Harry, please, calm down. Whatever it is, whatever happened, I can help you. I just need you to talk to me."
— Inside Harry's Head —
"I need you to talk to me" Harry heard Snape say. He couldn't do it though. He couldn't say anything. He was stuck, he was trapped.
"No!" Harry's voice said, but it wasn't his voice. Bright sickly green chains wrapped around his wrists and ankles. Harry blew them apart.
Everything was so easy in here. Inside the Castle of Thoughts. There were others here. They gave him food that reminded him of happiness.
Harry had no idea how long he had been here. He knew it couldn't have been long, but time was tricky. It felt like months, trapped inside a dungeon, living chains trying to keep him down.
"SARASISACS" Harry yelled out in parseltoungue. It blasted the chains apart and away, and blew the walls down. The endless green fields. The night sky. The two moons that aren't moons.
They blinked. They looked angry. Chains flew at him. They wrapped around him, and brought him to his knees.
"Harry, stop this. You're strong enough to stop. Come back to me." Snape said, from the real world.
"Harry. Dranicurak. Say it and leave here." The person that was always outside said.
Harry said it. Instantly he felt himself dissolve. He needed to get to Snape. He felt himself start turning into smoke and fog. He flew upwards. Into the sky, out to the real world.
He could feel his memories falling off of him. Everything since that one meal, where everything went to hell and back. Harry would be free, but once again trapped in his ignorance.
— Real World —
Harry blinked. Severus could see the spite and hatred leave, and Harry's soft green eyes, Lily's eyes, came back. Harry seemed tired, so Severus leaned him back onto his pillow, and Harry fell asleep.
Severus lowered the wards, and Dumbledore calmed down, seeing nothing wrong with Harry.
"Severus my boy-" Dumbledore started
"Don't" Severus said. Short and simple. He walked out, off to his quarters, in need of a drink.
— Linebreak —
Harry was free, and the evil was back contained. I did what I could. I taught Harry spells to help him keep going. I gave him good memories, I gave him strength.
I revealed myself to him, I revealed our secret. All of it. It fell back down though. The memories of everything that happened here fell down, and vanished. Locked away in the Castle of Thought. Off where only Harry can find it. If only he would look.
What seemed like hours to the outside, for me and everyone here, it felt like months. Months upon months being trapped in the body, hearing all the thoughts of evil and destruction. Everything bad that could happen.
All the anger we ever felt at anybody and everyone, suppressed and beaten out of us enough so that, that was created. It was terrible. Then we were attacked at Hogwarts by fellow students. The anger rose, and it consumed us.
When Harry retook control of the body, anger was trapped back inside it's area. Causing chaos and destruction in its dungeon.
All was right inside once again, and we can continue as normal.