3rd pov

We see the Shizuki family leaving union after the incident with Hiro injuring the students and nearly killing the red dragon emperor.

Hiro:mom can you explain what happened and why I look different now.

Mamako:well your elder genes have awakened but because your sister was hurt you went into a frenzy trying to kill the red dragon emperor since he was the target of your anger your appearance is also apart of the awakening.

Emma:Mmmmm what happened.

Hiro: Emma you okay.

Emma:yea I'm okay (notice Hiro's new look) big brother what happened to you.

Mamako: your brother's elder genes awakened.

Emma:cool but what happened to the perv.

Mamako:Hiro did a real number on him he basically tore him apart.

The three Shizuki's enter the bullhead to leave for home.

Meanwhile in the elders recess a tan skinned girl could be seen wandering around looking at her phone.

???:hm seems a Nergigante has awaken and a male from the looks of it looks like I might have found myself a mate I'll have to test him to see how strong he is.

She opens her wings up and takes flight heading to Union City.

Meanwhile at Union Academy

Sirzech:What do we do now that Hiro's elder genes have awakened we have lost a strong student because we didn't take the time to help him.

Serafall:come on Hiro-kun can't same mad forever.

Sirzech: Serafall did you not see what we saw he basically tore Issei apart let's not forget he tore his arm off and ate took an attack from me and didn't flinch you frozen him completely and he broke free in a twisted rage about to kill all of us if it wasn't for his mother.

Ozpin: Whatever the cause we need to get him back those with monster genes and elder genes are basically invaluable we made a mistake overlooking him because he seemed ordinary we have to make amends or we just might as well lose powerful allies if others find out about this.

Hanzo:Yes you are right elder dragons are considered the most powerful breeds of dragons.

Kirya:Master Hanzo is right I haven't gotten any word of any with the genes of one of the black dragons.

Nezu:Yes it would be a disaster if one were to appear and be on the side of our enemies many lives will be lost if that happens.

Meanwhile in the cafeteria

Homura: damn Hiro really beat us good I'm still sore from getting hit by that tail of his.

Myabi:yea no kidding who knew he had this type of power in him I was frightened the why he started tearing Rias' pawn apart like that such savage might .

Asuka: I've never seen him get like this before he's usually calm but the moment his sister was hurt he completely lost it.

Yumi:As is right I saw it in his eyes he want nothing more than to rip Issei apart piece by piece if Ms. Mamako didn't stop him Issei would be dead.

Ryona: maybe master can hurt me next.

Ryobi:Just Shut up you sow.

Myabi: Enough you two!!!

Mio:Hey everyone what happened here?

Koneko:Hiro happened.

Basara:What do you mean?

Asuka:Hiro went berserk on Issei and started to rip him apart.

Mio:so Hiro is dead well he wasn't that strong.

Yumi:you don't get Mio Hiro nearly killed Issei his elder genes actived and he turned into a bipedal Nergigante he was ripping Issei apart he even started eating him he literally ate the arm he ripped off.

Mio looked at the video of Hiro tearing Issei apart she was horrified even Basara felt his blood run cold when he looked into Hiro's eyes especially when he broke free from Serafall's ice he look like in went into some twisted rage ready to end everyone in Union Academy.

Mio:is that really Hiro what have we done to make him act like that?

Koneko: It's because the perv hurt his sister and he went elder dragon on him.

Shido:Hey everyone why does everyone look so down.

Asuka: No it's Hiro.

Kotori:So he got killed or expelled.

Asuka:No he almost killed Issei when he's elder genes awakened in him he ripped him apart it would be best to not make and smart remarks if you seen what we have.

Kotori:Come on it can't be that bad Issei most likely won anyway.

Homura: Kotori he fucking ripped off Issei's arm and ate it took a ball of destruction from sirzech and didn't flinch and was frozen by Serafall and when he broke out he looked like something that would give monsters nightmares so don't say shit about him being weak I don't think I'll be able to sleep well after what I saw and that roar it was like something out to get you like something that would chase you down until it finally gets you.

They show Shido and the spirits a picture of Hiro's Nergigante Form and the were scared Yoshino immediately hide behind Shido Tohka was trembling never before has she seen someone look so frightening kotori on the other hand was completely silent she didn't know what to think seeing those glowing ready eyes almost as if they were looking at her ready to hunt her down and end her existence altogether mortal fear is what ran through their minds to think someone so kind and caring come could become so monstrous in an instant it truly terrified them all and now Issei is traumatized from being ripped apart and eaten by Hiro all the Warnings Ddraig gave them not to push him they ignore and now they suffered the consequences of their actions.

Kazuma Satou one of Hiro's friends who always helped him.

Kazuma:So you see what you got coming to you huh.

Ravel:So he blood has awakened because you all pushed him to far not only did he overwhelmed the red dragon emperor but Union's strongest students my parents already to to me to get to know him maybe our blood along with the elder genes can produce and new breed among the phenex family have the power of the elder dragons and the phenex family would create a new age for my family I'm curious to what kind of child me and him could produce although the child would be a hybrid no tell what power the child would possess.

Rias:why are you worried about that.

Ravel:Our family learned we aren't truly immortal we can't keep up the pure blood devil thing but we can strengthen the phenex family with new blood and what better blood than one with elder genes my parents wanted me to find a perfect suitor for myself when I was watching that fight you all had he fought to protect his little sister like how I did with Riser I saw so much power in him in that moment you all force his power out instead of drawing it out which is why he rampaged I can see his not mindless but anger Nergigantes may not have power special abilities but their strong and very resilient which is why I plan to make Hiro my husband see how he would treat a girl right and the fact that you girls rejected him is your lost but it will be my gain.

All the girls that rejected Hiro were now jealous of Ravel's declaration to wife up Hiro.

Weiss had thought about it elder are taken from the parents but  their evolution can be influenced by the he blood of either parent if she has a child with Hiro the child would have her family's semblance and could be a different elder dragon entirely like a Valkhana she wondered why she mistreated him when he was so nice to her she decided to work to earn Hiro's trust back and start a relationship with him.

Many of the girls were thinking the same thing because of Ravel now wondering what kind of child they could make with Hiro now they wanted to get him back and keep him to their selves.

Meanwhile with Hiro

Shiver

Hiro: someone must be talking behind my back oh well it's best I get the hang of my new look.

With that Hiro left Union Academy and the girls regret of rejection as well as Ravel declaring to be Hiro's Wife and the mysterious Nergigante girl who is looking for Hiro.

https://www.youtube.com/watch?v=UOIkiPeIbvY