After a while of searching, Regulus had finally found the soul it was looking for.
"Greeting, good sir."
"I don't know who or what you are and I don't care. Just fuck off."
"No need to be hostile, I am here to help thee get revenge on the one that took thy life. I can bring thee back to the realm of the living, give thee a second chance.
And I do not even want anyting in return as we share the same foe."
"Y-you're kiddin' right? you can do that?
...No. This is bullshit, I ain't falling for this."
"Very well stay here then. Drown in thy despair."
Regulus made a portal back to the realm of the living and left, however, it left the portal open.
"....Ah fuck it. I don't have anything to lose." The soul followed Regulus though the portal and it closed behind it.