I don't own Highschool DxD, all credits to its creators.

Evie Etoulde

(Etoulde side)

"Hmm this isn't good, I must warn Issei that the arrogant evie is coming for him." A woman said. She is a well proportioned young woman, with long silver-blonde hair and gold eyes. Her attire consists of revealing dress that shows her chest, hip, and waist along with thin see-through arm sleeves.

Earth

(Next day)

Issei woke up from his sleep after yesterday when all the girls moved into the house, then the first thing he noticed was that his room was different, and as he was about to get up he saw four naked girls sleeping with him, Sona, Rias, Akeno and Asia.

"Wait Sona too? I know that she is engaged to me but I'm surprised that she already has an interest in me." Issei thought.

"Morning Issei-kun." Akeno said, waking up and on top of Issei naked.

"M-Morning Akeno, kya!" Issei said as Akeno started licking his neck.

"Hey Issei kun, I want to get to know you better. Wanna help me out with that?" Akeno said as she kissed Issei on the lips before breaking apart. "So shall we go further, Is-sei-kun?" Akeno said.

"Akeno…" Rias said, now awake. "How did you get into the room?" Rias asked.

"I'm just building some morning intimacy with my cute Issei." Akeno said while stuffing Issei's face in her breasts.

"My"? So you're his fiance then?" Rias asked.

"Well you know how our world works. But even so I am his senior and it's my job to take care of my junior." Akeno replied.

"Cleaver, but now I see your plan of attack." Rias said as both Rias and Akeno sat up on the bed.

"No fair you two!" Asia said while snuggling up to Issei.

"Asia be careful! You might fall." Issei warned.

"Oh, right." Asia said.

"Here let me help out." Issei said. Just then Issei covered Asia with green energy, then when Asia took out her angel wings their aura was now white mixed with green. "Alright, that will keep you from falling." Issei said to the girls shock.

"How?!" Sona said, now awake.

"That aura just protects her angelic being from anything that will make her fall, so anything that happens to her that will make her fall will not have any effect because the fallen elements will be consumed, this includes intercourse anytype, cursing or impure thoughts." Issei explained.

Scene skip

(School)

Everyone was excited for summer, then one girl with glasses approached Issei.

"Yo Issei, you got anything planned for this summer?'' the girl asked.

"Oh you're Asia's friend Aika Kiryuu right?" Issei asked.

"That's right! I'd also like to know if you have anything planned for her this summer." The now named Aika said.

"Well, I do have something in mind." Issei said blushing.

"Oh I see. Well I guess I wont get into it TOO much." Aika said.

Scene skip

(Old school building)

"So Kiba, what do you have planned for the summer?" Issei asked remembering what Aika asked him.

"Oh that's right, we didn't tell you." Kiba replied.

"Oh so everyone's here." Rias said entering the room. Rias explained what Kiba was talking about.

"So for the summer you guys are going home?" Issei asked clarifying.

"Yes, but you and Asia are coming too." Rias said.

"Are you sure?" Asia asked.

"Why yes, especially since onii-sama requested it." Rias said.

"Alright then. Issei-san, will you help me pack?" Asia asked Issei while hugging his arm.

"Me too Issei-senpai!" Gasper said.

"My my, I will also need help Issei-kun." Akeno said.

"Can you also assist me, senpai?" Koneko asked.

"Alright that's enough." Rias said, annoyed. Just then everyone went back to their seats.

"So are you going too, sensei?" Issei asked Azazel, who no one noticed entered.

"Wait when did you arrive?" Rias asked.

"Only Issei here sensed me, you guys still need a lot of training. Also yes I will be coming." Azazel said.

Scene skip

(Underworld)

The ORC as well as the student council went on a train to the underworld, then when almost to their destination they were teleported away but Issei was sent to a different destination.

"Ok where am I right now?" Issei asked himself, blowing off the situation that just happened. Then he heard a loud stomping and growl from the distance. "It's the smell of a dragon but I also smell something else with it." Issei said. The dragon then appeared before Issei, it was a fifteen meters tall, gigantic western Dragon. With the exception of his lower body, specifically his belly, the inner portions of his long tail and legs, that are beige in color, a majority of the dragon's body is covered in dark purple, draconic scales. Also, the dragon has a triangular head with yellow horns, a pair of large, keen red eyes with lavender sclera, and serrated yet sharp canine teeth. He also has claws with long sharp, yellow nails, on his hands, and large bat-like wings with rigid tips. Additionally, he wears black armored pauldrons that extend down to his arms and a loincloth decorated with metallic accessories. "Mind telling me who you are before we start fighting?" Issei asked the dragon.

"My name is Tannin, and I was told to test you boy." The dragon now named Tannin said. It then attacked Issei by throwing a volley of fire balls at him, then when he saw that Issei had evaded them he charged up a breath of fire which he shot at Issei, but Issei used an energy shield to protect himself from the blast, then Issei countered by throwing an eraser cannon at him which injured him and destroyed the surrounding land.

"Ok I wasn't thinking that time. I hope I didn't do major damage though." Issei said.

"Alright…That's enough." Tannin said. Then a magic circle opened up revealing the rest of the ORC, the student council and Azazel.

"Nice job Issei kun!" Akeno said as she went over and hugged Issei.

"Akeno!" Rias shouted while Akeno immediately backed off.

"Oh Issei. I see you've won, this damage however seems a bit over the top though, don't you think?" Azazel said.

"Yes, I admit I wasn't thinking that time. So how much damage?" Issei asked.

"You destroyed pretty much everything here in the outland's, the blast is just about at the city." Azazel said to everyone's shock but Issei's worry.

"Sigh* No one got hurt did they?" Issei asked.

"Just Tannin even though he used a full powered defense spell." Azazel said.

"Oh boy. Being reminded how strong I am just makes me wonder how my uncle hid me for this long." Issei said.

Flashback

(Jin's prospective)

Issei just exploded in power but far away Jin casted a barrier to stop his power from attracting attention.

"Shit, his presence alone is dangerous! I can't hold this barrier for long." Jin thought but his barrier felt like it had been powered up, just then he noticed a red-haired biker next to him casting a barrier as well.

"Who are you?" Jin asked.

"Just call me Red, the supernatural know me as the apocalypse dragon but I don't like that extra bulshit." The now named Red said to Jin's shock.

"What?!" Jin said in shock.

"Just focus on the barrier! This guy is tough even for me!" Red said to Jin's shock. Just then Issei had stopped his rampage. He flew right out of the barrier breaking it easily, but not before red placed some power on him. "That move was my illusion magic so he won't be detected by any supernatural forces, but it will leave him as soon as he calms down. Welp see ya." Red said disappearing back to the dimensional gap.

(Flashback end)

"Oi Tannin! You alright?" Azazel asked.

"These wounds beg to differ! Why would you have me fight him anyway?" Tannin asked.

"He is the host of the red dragon emperor. Though the entire time we knew him he's always held back." Azazel said.

"Oh, so this is who you've taken on now, Ddraig." Tannin said to Issei as his gauntlet appeared.

{Yes, it's been a long time Tannin.} Ddraig said.

"Oh this is THAT Tannin you told me about?" Issei said to Tannin's amusement. "So where did you guys end up?" Issei asked.

"We were teleported to a separate field far away from here where we were attacked by mid-class devils for a warmup." Kiba answered.

"Did you win?" Issei asked.

"No, we were outnumbered and outmatched, plus Rias and Sona were observing us, and I guess Azazel was observing you." Kiba answered.

"Oh, well nonetheless I'm glad that you guys put up a good fight." Issei said.

"I just wanted to know how much power you can pull when caught by surprise. And that helped me think of your training schedules." Azazel said.

(Unknown location)

At this unknown place were Bikou and another person. She is a beautiful young woman with a voluptuous figure, long black hair with split bangs, and hazel-gold eyes with cat-like pupils. Her attire consists of a black kimono, a yellow obi, a set of golden beads, and an ornately detailed headband. The kimono features a red interior and it is open at her shoulders, giving view to her large breasts which rival those of Rias and Akeno in terms of size. It was obvious that she was a nekomata.

"Geez, you're late Bikou." The nekomata said

"I just worked out some things with Vali. Well, we should go greet him." Bikou said.

"I don't care about Loki though, I only want to get my little sister." The nekomata said.

(Scene skip)

Everyone arrived at the Gremory mansion where Issei and Asia were introduced to Rias' family. Then later they all ate for dinner.

"Wow, this tastes so good!" Issei thought to himself as he ate. Then he looked around and noticed Koneko was not herself today. "Is something wrong?" Issei thought.

"By the way Issei." Zeoticus said.

"Yes?" Issei responded.

"How is your uncle doing?" Zeoticus asked.

"He's doing quite well." Issei said.

"Good, also Issei, you may call me father from now on." Zeoticus said to Rias' embarrassment.

"O-Ok then." Issei said nervously.

"Dear, you're being too hasty. There is an order that must be followed."

Scene skip

(bedroom)

After everyone finished eating, Issei and the others got ready for bed And Issei was still awake.

"Geez, I know that we're engaged but this is a bit too fast. Also I'm worried about Koneko" Issei said. Then he heard a knock on the door. "Come in!" Issei said. Then the three girls walked in being Asia, Gasper and Akeno.

"Um, Issei-san." Asia said.

"Yes?" Issei replied.

"Can we sleep with you? I don't like being in a big room by myself." Asia said.

"Yes, and I don't like being without my Issei-kun." Akeno said.

"And being alone in a big room also frightens me." Gasper said.

"Alright, you can. Besides, the real training starts tomorrow." Issei said innocently.

(Next day)

"Looks like everyone's here. I've made a training plan for 20 human days. Issei, let's start with you." Azazel said.

"Me?" Issei said.

"That's right, however compared to everyone else here yours will be far easier." Azazel said as Tannin landed in front of everyone.

"I'll be your personal trainer. Now come!" Tannin said.

"Alright!" Issei replied cheerfully.

That's it for now see ya later! But first…..

Attacks Issei used:

Eraser cannon

Seismic Power(In flashback)

Lariat(Also in flashback)