A/n : I'm changing Satan's name to diablo, makes things less confusing.

After leaving the living room Sunny made her way to her room, when she walked in she saw the girls in the room, as she walked in and closed the door the girls turned to her.

Murayama : "hey Sunny we're just playing Truth or dare what to join"

Sunny : "ok"

As the girls all sat in a circle they each took turns giving one another a task's or a question, soon it came to Murayama's turn

Aika : "ok Murayama truth or dare"

Murayama : "I'll go with dare"

Aika thought for a bit before smirking

Aika : "ok I dare you to go down and hug Y/n"

Girls(Exempt Aika) : "WHAT"

3rd Person P.O.V

Y/n opened Sunny's room door to see the girls all in pj's sitting in a circle

Y/n : "is everything ok I heard screaming"

Sunny : "yeah sorry bro, we're fine"

Y/n : "ok just try keeping the noise to a minimum, its almost midnight and I don't want you lot waking up the neighbours"

Sunny : "s..sorry bro, we will kept our noise down"

Y/n : "thanks she devil"

Sunny rolled her eyes before giggling a little, as Y/n was about to leave he saw Murayama stand up and walk to him

Y/n : "are you o..."

Y/n eyes widen as Murayama wrapped her arms around him hugging him, as she did Y/n saw the girls all looking shocked that she did it

Y/n : "um what are you doing"

Murayama : "I..I'm sorry I was dared to do this"

After a bit she let go and sat back down, Y/n just shrugged it off and turned to Sunny.

Y/n : "hey Sunny I'm going to head out for a bit, if you need anything you have my number"

Sunny : "yeah ok stay safe"

Y/n : "will do"

Timeskip(Y/n P.O.V)

As Y/n was walking around town he noticed something, a small shadow was following him he turned around but saw no one was there, he shock his head and kept walking. He soon was standing in the center of a park beside a fountain

Y/n : "ok who ever it is following me, you have 10 seconds to get out here"

After a few seconds Serafall walked out

Y/n : "what the hell do you want"

Serafall : "I came to reason with you"

Y/n : "reason with me, after everything your race has done your lucky I don't kill you right now"

Serafall : "tell me, why do you hate us so much"

Y/n : "how dumb are you, first your race attacked Sunny for no reason, then you tried forcing her into a marriage, and then you have the nerve to ask why I hate you"

After a bit something didn't seem right, soon he got a call from BW

BW : "Y/n we have a problem"

Y/n : "what is it"

BW : "Devils are here trying to turn Sunny into one of them"

Y/n's eyes were a dark red again, he took off and headed towards his home when he got there he saw something that made his blood boil

3rd Person P.O.V

Currently Sunny was being held down by Rias and Issei as Sirzechs had a devil peice in his hand, the rest of Sunny's Sleepover was unconscious on the floor hell even Rias's peerage was on the ground.

As Sirzechs was about to make Sunny his Pawn their eyes widen, Sirzechs slowly turned to see an enraged Y/n before he could speak Y/n cut off both os Sirzechs arms making him scream and fall backwards, he then cut both Issei and Rias across the chest making them bleed out on the floor, he then throw all 3 of them out of the window and infront of the house, when Y/n jumped out and landed infront of them a bunch of devils showed up along with the other 3 Devil Satan's, Gremory family.

Serafall : "Y/n I'm sorry but you have committed to many crimes, first you killed to high class devil, then you killed a fallen and now you have injured a Satan"

....

Y/n(Satan) : "I have had enough of this"

Everyone's eyes widen as Y/n's power started rising at an insane rate, as his power kept rising cracks appeared along the ground, the sky turned a dark red and red lighting struck down in all directions, as hell fire started appearing it soon covered Y/n, but after a bit it died down and the devils eyes widen as they saw Y/n but he looked different.

(forgot to say when you speak in this form, it will be a mix of yours and Satan's voice)

Y/n(Satan) : "You Devils have annoyed me for the last time"

Everyone was in shock Y/n was almost twice the size of anyone there, not only that but the sheer power coming from him scared everyone there, as they all looked at Y/n Beelzebub suddenly walked forward, as everyone watch they soon shared a shock look as they saw Beelzebub bow infront of Y/n

Y/n(Satan) : "it would appear atleast one of you know who I am"

Serafall : "Beelzebub what are you doing"

Beelzebub : "I'm bowing...to Diablo the true leader and creater of the devil faction"

Just then all the Devils bowed to him apart from Issei, Rias and Sirzechs.

Y/n(Diablo) : "now who you what power I possess, and you will now know who your true leader is"

Y/n turned to see the 3 that tried turning Sunny into a devil

Y/n(Diablo) : "you 3 have become a pain in my ass the moment I got here, as of now you 3 are never to return to the human world, and if I find out that you have I will personally eliminate you on the spot....NOW LEAVE"

Soon every devil in the area ran and Y/n changed back to his normal self, when he did he headed to check on Sunny, as she said she was fine Ymn took out his blade and walked towards the rest of Rias's peerage, as he was about to kill them Sunny got in the way

Sunny : "they tried telling Rias not to do it, they helped me brother"

Y/n : "they helped you"

Sunny nodded and Y/n looked down to see their still asleep

Y/n : "....Thank you"