Work

R.O.B : First of all, child, thank you for choosing to do my work, i promise you, you will not regret it. Now, the work you have to do for me is actually pretty simple in terms of explanation. All you have to do is kill a demon king.

Soul : Excuse me?

R.O.B : Kill a demon king.

Soul : kk..kill a demon king???

R.O.B : Yes

Soul : Are you sure i am the right person for this work?

R.O.B : Why do you ask this question ?

Soul : Well, i was just a below average human when it came to physical activities. I don't think that i am good enough for this job.

R.O.B : Do not worry child, i am sure that you will be able to successfully finish this work.

Soul : But....(gulp)

R.O.B : Child if you do not believe in yourself, then believe in me who believe in you.

Soul : Ww..well if you are so confident about me then i guess i can atleast try too. But, before that can you please tell me why do you even need my help in killing a demon king? I mean, at your level, you should be able to kill the demon king yourself without any problem.

R.O.B : The demon king i want you to kill is actually a demon king in a low level mortal world. Unfortunately the ones who were overseeing this task have not been able to do this (can't exactly say outright that they are a bunch of morons).

Soul : okay? Please tell me more about this demon king whom i am supposed to kill.

R.O.B : Actually, you have already heard about this particular demon king.

Soul : I have, but that's impossible. There is no way i could have heard about it. I spent most of my life inside my home pursuing my hobbies about which you know of very well.

R.O B : Yes, i know about your hobbies very well. But, try to remember what i told you about the reincarnation options you will have after you have completed your work.

Soul : Reincarnation options?

R.O.B : Yes

Soul : Hmm... Reincarnation options let's see. Ah yes, how could i have forgotten something so important so easily? It just told me that i could choose any world i want to reincarnate with important information but, how is it connected to the demon king? Wait a minute!!! It said any world of my choice including fictional world!!! Fictional!!! That means Anime, Marvel, DC and other multiverses in those fanfics some of which i tried to read but couldn't continue reading some of them, because of the sheer stupidity of the characters(especially young masters and old ancestors screaming "junior you are courting death").

R.O.B : Good, you finally remembered.

Soul : Yes, thank you for reminding me. I can't believe i forgot something so important.

R.O.B : It's okay. It can happen to the best of us.

Soul : Even someone like you can forget something?

R.O.B : It happens sometimes. But you are again forgetting the main point.

Soul : Yes, the demon king. Sorry about that.

R.O.B : It's okay.

Soul : So from which fictional story does it belong to ?