Harem x male reader

Welcome back to my story

Today was the week of finals you were getting every question correct one after another, everyone was trying to copy you but you finished way too fast for anyone to be able to copy you, they let you leave early because you finished like an hour before everyone else, You started walking home but something was off about everybody, Everyone was fighting there were some bodies on the floors, You were looking at what the hell was happening but some one came running at you with a pipe, you knocked him out in five seconds, So after that incident you continued walking people kept attacking you, you kept knocking them out one by one, but after around three minutes you saw a beautiful girl Jet black hair Red eyes  and a hoodie that matches her eyes, but you knew there was something different about her, you knew she wasnt a normal human

(Y/N): "Hello there"

She didn't even bother looking at you she just continued to watch the mayhem, so you grabbed her shoulder and turned her around

(Y/N): "Hey lady Do you know what the actual F*ck is going on here?"

She was shocked

???: "Ummm it may be my fault"

She was very shy but her eyes said a completely different story it said that she is a psychotic killer

(Y/N): "How the hell is this your fault"

???: "It's a side effect to my powers" 

(Y/N): "What type of power does this to people?"

She lowered her hood to show her horns

???: "Demonic powers. Are you happy? Now leave me alone"

(Y/N): "No if you are the cause of this there must be some way to fix this"

???: "Wait.... Are you even human?"

(Y/N): "YES I'M F*CKING HUMAN NOW HOW TO WE FIX THIS!?!?!"

???: "If you really are human you would have been affected by my curse"

(Y/N): "Okay maybe I have some powers but that doesn't change the fact I am human"

???: "It's just the first time I have seen someone that Is as strong as me"

(Y/N): "What do you mean?"

???: "It's just the only type of people who can withstand my curse are people as strong as me"

(Y/N): "Well Follow me anyways I want you to get as far away from those humans I dont want anyone else getting hurt"

???: "Okay"

You two went into an alley way and then you summoned Helel and flew with her  to somewhere that had no people around

(Y/N): "So what's your name where did you come from?"

???: "My name is Theron I  came from the Void or which you humans call  "Hell""

(Y/N): "Okay Theron but why did you come here?" 

Theron: "Because my dad told me I had to find a husband and said there is Only demons In the Void, but I wanted someone powerful and unique, but there was no Unique or strong demon so I came here and met you"

She smiled similar to the Yuno Yandere smile, you were Instantly creeped out but you know if You deny more people will get hurt

(Y/N): "Well I already have like four wifes Haha-"

Theron: "Then I'll be your fifth"

(Y/N): "Wait what?"

Theron: "You heard me I will be your fifth wife"