Scenario 1: You try to save Sonic from the demon that manifested in his body when they were separated as you confronted Fleetway Super Sonic
Scenario 2: You were worried about Sonic as you didn't see him in a very long time and none of his friends would tell you what happened until one day Sonic returned but he wasn't the cheerful sweet hedgehog you used to know anymore
Scenario 3: Make it up
Scenario 1: While saving Sonic from Robotnik you noticed a clone of him inside a containment seemingly dorment
Scenario 2: You found an unconscious and hurt Tails who when he woke up told you about Extra life Sonic going on a rampage asking you to stop him
Scenario 3: Make it up