My Secret Shadow

I saw this WP on Reddit, and I had a lightbulb moment.

Since the age of 14, you've noticed a monster stalking you. A few years later, you've noticed it seems very protective over you and will go through extreme measures to protect you. It's usually friendly, but it seems threatening when your childhood friend is around.

I changed "Monster" to a shadow, but is it a shadow really?

Since a young teen, Damien has always noticed s͟o͟m͟e͟t͟h͟i͟n͟ ͟g, that something is a figure in the corner of his eyes. He thought he was just going crazy, till one day it appears before him. He decided to confront this figure, but gets a weird outcome.

"𝑊ℎ𝑎𝑡 𝑑𝑜 𝑦𝑜𝑢 𝑡ℎ𝑖𝑛𝑘 𝐼 𝑎𝑚?"

"I don't know, you're like a shadow, always following me," I mumble under my breath.

"𝑇ℎ𝑎𝑛 𝐼 𝑎𝑚 𝑦𝑜𝑢𝑟 𝑠ℎ𝑎𝑑𝑜𝑤,"