This basted of my cheated love idea

Yn was member of rias peerage he was nice to everyone and strong as well yn doesn't have a secret fear but he was the same magic as rias put more Concentrated like it isn't magic at all more like pure raw energy

Yn is akeno boyfriend at school they were the couple of the sentry other students like them doing cuddling,giving each other food,holding hands etc

But something changed in akeno

After issie the perv has joined the peerage akeno been distant if Yn didn't know any better he was thinking that akeno cheating on him

After knowing Yn was right akeno was cheating on him after he saw akeno having sex with issie

Yn never spoke to akeno or texted or called Yn got rid of all the stuff of them together Yn still spend time with the others besides issie and akeno

Till it was spring break and we hated to the underworld because of training and a peace treaty but it interrupted and the god of mischief Loki

But after being in prisoner by Odin it was our task to face him Loki was freed from his small prison and we had to fight his children

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After finishing off his children Loki look at me and used his magic and started looking in my memories then sees akeno cheating on Yn and saw something law dormant in his body Loki touched Yn body making his glow then Loki let go of Yn making him fall of the ground and started breathing heavily

Rias:Yn saw something what did he do

Akeno:Yn baby snap out of it

Koneko:come on big bro

Yn keeps breathing heavily and his muscles bulge out of his shirt Yn gets up a little bit but his eyes were purple and started powering up uncontrollably

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Instead of gold it's dark purple

Everyone sees Yn transformed into a giant ape

Yn was raging out destroying boulders and attacking his friends and trying to kill issie and akeno

Akeno:Yn what are you doing it me your girlfriend akeno

Yn:ROOOOOOAR!!!!!!!!!!

Yn shot a blast destroying a few boulders

Loki:it seems he's he's on purposely trying to kill her

Rias:what did you do to Yn

Loki:I looked into his mind and saw what he was hiding that women had sexual intercourse with the red dragon emperor while still in a relationship with that boy

Everyone was shocked what akeno did and know why he's separated with akeno but they'll discuss that later

Yn was trying to kill issie and akeno they been evading his attacks

Loki:yes my new pet kill them both and kill them rest after your done kill Odin

Yn stops and looks at Loki With and angry look and starts powering up and starts shrinking and everyone sees Yn new body and form

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Yn:at long last I've ascended and you are done

Yn gut punches Loki making him be unconscious and Yn grabs thor hammer and traps loki in Thor hammer

Yn:now what should I do to you

Akeno:Yn I didn't mean to cheat on you were going slow in the relationship and I wanted to be your first

Yn:then why didn't say or hint anything to you think I can read minds or see in the future akeno no I can't you have sex with a perv who only cares for a women body and not there feelings like what the fuck is wrong with you

Akeno:I'm sorry I really am

Yn:you think saying sorry going to do anything no it won't you know what go ahead keep on having sex with him once he finds a women with better body then yours don't be crying to mean this is your fault and have to face consequences when that happens

Akeno look down and tears up

Yn:rias everyone besides issie and akeno I'm sorry for attacking y'all like that I let my anger control me like that

Rias:it's fine Yn

Sona:yeah you were just angry at akeno betrayal towards you and we didn't figure it out sooner
But if your not busy and single

Rias/sona:we would like to go out with you

Yn smiles

Yn:sure

Epilogue
After the battle from Loki me and rias and sona started going on dates and leads to me having a relationship with both of them and let's just say your boi been getting threesomes in bed besides that after a year or two we graduated high school and got married I'm the husband of two beautiful wife's and have an amazing family