Red Emperor Dragon must be killed

I trust you will end him

I will ~Vali

It was the start of summer break and as usual Issei woke up to a familiar sight of beautiful women sleeping naked all around him.

"Harem king here I come!" Issei thought to himself as he tried to get out of bed without waking anyone up but instead he accidently woke up Rias.

"Good morning Issei" Rias said as a yawn escaped her mouth. A lewd smile was seen on Issei face as he stared at Rias perfect breasts.

Rias quickly noticed and signalled for him to meet her on the balcony, on the balcony Issei was pulled into a hug by Rias.

Issei was having lewd thoughts as he felt Rias breasts, Rias pulled Issei away and a more serious look appeared on her face.

"Issei do you remember want happened after you saved me in the dimension gap?"

Issei had a disappointing look on his face and answered "I'm sorry Buchou but I don't seem to recall anything after the fight."

Rias was disappointed but flash a smile before walking back into the house, Issei noticed how disappointed Rias was but didn't want to question her further so he quietly followed Rias back into the house.

After eating breakfast Issei decided to take a shower before going out with the others. While sitting in the enormous tub Issei saw a glowing light coming from in front of hime which turned out to be a magic circle.

Issei got up and quickly grabbed a towel and went next to the magic circle, a figure appeared from the magic circle which Issei recognise. Sir Zech appeared from the magic circle and was staring at a butt naked Issei.

"Did I come at a wrong time?" Sir Zech laughed.

"Sir Zech why are you here!?" Issei exclaimed as he ran to grab his clothes. Sir Zech waited till Issei got back to him.

Issei saw the serious look on Sir Zech face which changed not too long ago.

Issei… something dangerous is happening in the underworld

We need the Red Emperor Dragon help

As Issei heard those words he immediately agreed to the request and processed to tell his comrades but was held back by Sir Zech.

"The mission is too dangerous for the others so you are doing this on your own."

Issei turned to looked at Sir Zech and only a nod was seen from Issei. "But I can still tell them right?"

Sir Zech signalled for Issei to head out and tell them with him slowly tagging behind.

Everyone was already ready and waiting for Issei but when they saw Issei expression they started to get worried.

"I'm going to the underworld to help Sir Zech with a dangerous mission and I hope you all understand!" Issei said as he bowed his head.

Everyone had confused looks on their face but Rias got up and walked up to Issei and placed her left hand on his face.

"Don't worry you have us." Everyone nodded but was surprised to see Issei standing up and turning around.

"I'm sorry but I have to do this alone… that is what Sir Zech said… am I right?" Issei said before turning his head towards the narrow walkway he came from.

Everyone expression changed when they saw Sir Zech appearing from the walkway, "Oniisama?" Rias was in completed shocked as she saw Sir Zech going over to Issei and opening a magic circle.

"I'm really sorry guys but this mission is too dangerous for all of you only Issei has the power to help I'm truly sorry." Issei turned to face the others, he was happy to see Kiba giving him a thumbs up and the others waving but what caught his eyes was Rias worry expression.

Issei … Issei … please come back safely

"Don't worry Buchou! I will protect all of you!" Issei exclaimed loudly as he teleported.

To be continued :)