Scénario 1: After sara having found the anterne. She was able to have the memories of some participants except (oc). So sara and (crush) tries to convince them to remember their memories. (oc) finally agreed. Sara was getting ready to use the lantern. What she did not know what the lantern had a little revealed . Instead of bringing back the memories of (oc). They will just see the memories of the old (oc) past live

Note: it may be interesting. Small details if you have physics of a character from another Fandom. You can use its backstory ^^