~A Hero is someone who has given his or her life to something bigger than oneself~

Issei and Sir Zechs had teleported into the Gremory's household where the other devil kings waited.

"Ah! Welcome red emperor dragon!" Lord Odin was excited to see Issei after their little adventure to the various titty bars in Japan.

Issei was nervous as he saw the other devil kings looks and was starting to regret taking up this mission. "Issei this mission is really dangerous and could even be your death. I hope you will still do it!" Sir Zechs said before signalling to Serafall to brief about the mission.

"Issei as much as I hate to see you go to battle, this is too important. Your enemy is Vali and we think his goal is to end you. You as the red emperor dragon should be able to win and save the underworld, I wish you all the best!" as Serafall pose with a smile on her face.

Va… Va… VALI!

Issei suddenly recalled back to the times he saw how powerful Vali was and how me manage to defeat that fallen angel so quickly. But Issei will be Issei and he accepted the mission without hesitation.

"You will leave now!" Sir Zechs was not confident that Issei would survive this battle but it was the only choice he had.

Issei was getting ready to head out when Sir Zechs came up to him and said …

"A Hero is someone who has given his or her life to something bigger than oneself. Remember that you will be a hero no matter what happens!"

Issei was ready and determined to head out, "Boosted Gear! Balance Breaker!"

And so Issei headed out in search of Vali who was waiting for him not too far away.

On Earth

"Where is Issei! It has been 3 days already!" (a/n I made the underworld timing slower than earth so ya haha I suck :D )

Rias was worried about Issei being gone for so long but she was not the only one, every girl in the house were starting to panic as well with Kiba being the only one calm.

"Why don't we just go to the underworld?" Irina said before a bright light was seen.

"Already ahead of you" Rias was worried for Issei and decided to go to the underworld to look for him.

As they arrived in the underworld, they were greeted by Sir Zechs who was expecting them to come. "Oniisama! Where is Issei!" Rias ran up to him.

Sir Zechs could see the worried look in her and tried to sound as cheerful as possible, "we sent him off already to face Vali!" he knew that didn't help at all.

"You … WHAT!" a red aura was seen being form around Rias as she stared at her brother, … … … Rias begun to walk closer to Sir Zechs before he knew it she was right in front of him.

"Where did he go …" Rias was furious and worried but all she got was a worried looked from her brother.

*Flashback*

*Issei, Vali will be heading to the dimension gap next and we want you to go there and finish him off*

*Back*

"I'm sorry but I can't tell you" Sir Zechs said before walking toward the Germory house.

Rias and the others were shocked by Sir Zechs respond and quietly followed him into the house.

I will find you Issei don't worry I will find you my adorable servant

Rias and the others were told to relax and not worry about Issei as he will be fine. The devil kings went to have a meeting about how would they tell them where Issei really went and how to break the news if Issei had died.

It was late at night when a sleepy Asia wondered the halls trying to find the bathroom but as she was wondering around, she stopped in her tracks as she heard a very serious talk happening in one of the rooms.

Issei has entered the dimension gap …

Asia was frozen on the spot as she heard what she heard and quickly started to run back to tell the others.

"Guys! Issei is in the …"

To be continued :D