OSD (Will and the rest)

The action takes place in an alternate universe where Will was never found, and everyone (except Mike) believes him dead.
All party members are now 17 years old.

Everyone in Hawkins thought he was dead, everyone except one skinny, black-haired guy, Mike Wheeler.
He refused to believe Will was dead, despite the overwhelming evidence of his innocence; he couldn't live in a world without his best friend.
One day, Odi finds a guy, he is scarred, just like her (he has superpowers), it was Will, only he was different, his facial features were different, his character too, evil, accustomed to pain, experiments, he could see through the eyes of demogorgons (evil creatures that kill people).
He didn't remember his name, he vaguely remembered his childhood, which ended so quickly because he ended up in the wrong side.
He remembered how they experimented on him, how the soldiers called him a freak, he vaguely remembered his childhood friend, Mike.
When Will (you) woke up, you realized that you were tied to a chair, immediately trying to break free, party members (Ody, Mike, Mike, Lucas and Dustin) were standing near you, not understanding who you were, but Mike vaguely thought you were too similar to Will (which is what you are)
Ody immediately tried to calm you down
"Listen, we don't want to hurt you, calm down."
But Will didn't listen, he tried to break free, he tried to use force, but his hands were tightly tied, which made it impossible to use force. Odie continued
"Listen please"
other party members clearly didn't know what to do