Hey everyone. Merciless Sun here with the sequel to How To Be An Angel Hunter, How To Stop A Devil Civil War! A couple weeks after Isaac got Isabel on his side during his date with Rias and Asia, they now are training for the 2nd biggest war in Highschool DxD history! Enjoy!

-Isaac's Room, 2 Weeks Later, Tuesday Morning, Isaac's POV-

Well, things have been kind of uneventful over the last couple of weeks, but Rias and I are skeptical about the Phenex family, but that's partly why my neighbor, Isabel, and I started training in combat: Sword training for myself, and for Isabel: boxing and training in the Style of Flowing Water, Crushing Rock from the One Punch Man universe. Also over the last week, I turned 21, and both Isabel and I drank in celebration, since she is 23. And because Isabel wanted to be with Rias, she moved in with us.

Rias' alarm for the Academy woke us all up, with Asia cuddled next to me, and Rias holding my hand while cuddled up with Isabel. Rias said, "Good morning, everyone."

I said, "Morning, Rias. Have any interesting dreams?"

She said, "Maybe….I dreamt a complete dismemberment of the Devil hierarchy, and Riser ruling all on a mountain of broken men."

"Damn. Do you think it means anything?"

"Not really. That cell is protected by multiple barriers, and he's also in chains."

Asia went into the shower first, and I sat on the bed with Isabel and Rias. "Any word on when the Rating Game will be?"

She said, "It'll be tomorrow."

Isabel said, "What are they wagering?"

"If Sirzechs wins, they stop with the hostility. But if they win…..Riser gets released from prison."

I said, "Oh shit. That is a worst case scenario then. I have a feeling your brother is quite capable, especially with that woman, Grayfia."

Both Isabel and I grabbed a hand, and I said, "Don't worry about this. Besides, I've been training really hard with Isabel, so if they try to pull anything, I'll be able to protect myself."

Isabel flexed her muscles, smiled and said, "Yeah, these are the guns I won't need a permit for! Your ex-fiance better watch out!"

Both Rias and I chuckled, and Rias said, "Thank you both."

She kissed me and Isabel on the cheek, and Asia just came out of the shower. Rias said, "Now that we got that out of the way, I'm gonna take a shower and get ready for school."

She got up and went to the bathroom, and Isabel said, "Let's train a little more than usual. I want to make sure nothing bad happens to Rias."

I said, "Yeah. But first, I'm gonna cook some breakfast. Wanna help me?"

She said, "No, thanks, I gotta call my mom, but let me know when it's ready."

"Nice. Wait, have you been telling her about this?"

"No, thank God. I'm telling her that I'm on a hiking trip through most of Japan."

"Oh, ok. Well, I'll get you when the food is ready."

"Will do."

Asia was getting ready, but I left to the kitchen and started trying up some scrambled eggs, toasted bagels, and some sausage.

Later on, Rias was able to get some food before leaving for school, and Asia joined me. I let Isabel know it was ready, and she got off the phone. She said, "Thanks. She sure talks a lot."

I laughed and said, "Sounds like every mom. How do you like this, girls?"

Asia said, "It's really good. Where'd you learn to cook like this?"

"My dad taught me. Well, I'm gonna call Clark and let him know what's going on."

I pulled up the holo-screen, and Clark said, "Morning, everyone. Where's Rias?"

I said, "She left for the Academy already. She said the Rating Game is starting tomorrow. Have the drones picked up anything?"

"No, it scanned the area and found nothing. What are your plans for today?"

"Well, Isabel and I were going to train."

Isabel said, "Yeah, and thanks for the training programs. I never thought I would get this strong. Where did you get this style from?"

Clark replied, "It's from one of the greatest martial artists in an alternate universe, his name is Bang, otherwise known as the Hero, Silver Fang."

She said, "Neat."

Asia said, "Have you found anything from the Church, Clark?"

"I haven't really looked. Why do you ask?"

"Well, since I haven't been back with them for almost a month, I would think some Exorcists would come over to see if I was compromised."

He said, "Yeah, that would make sense. I'll check the drones and let you guys know. And have you been training on how to use your Sacred Gear, Isaac?"

"I'll admit, I want to make sure I'm proficient on how to swordfight."

"What level did you recently beat?"

"Well, I didn't know there were levels. I thought you just put them in at random.

He facepalmed, and said, "You're killing me. Think about it. Using the knowledge you have of the warriors you're fighting, who would be the weakest, and who would be the strongest?"

"Ooooh, that makes sense. Let's see…. I guess the highest I've defeated would be Ais Wallenstein."

"You're good then. Start the training for your Rebirth Gear. You'll thank me later."

"Will do. Well, we got to finish our food, then we'll do our training. See you later, Clark."

The screen shut off and I said, "I thought I was doing good so far, but to think I've been neglecting the Sacred Gear. Let's see if I can even bring it out still."

Isabel said, "Save it for the training. We've got some more progress to make."

"Right."

We finished eating and then went to the forest for training.

-Forest Outside Town, 45 Minutes Later, Isaac's POV-

Didn't think it would take that long to get here. Oh well. Asia, Isabel and I just got here with our lunches packed. I then put on some Gorillaz, and set up the training program for Isabel to fight one of the Warriors Clark set up for her: Jonathan Joestar.

She really got into it, dodging his Ripple attacks and parrying with a few light hits from the Fist of Flowing Water, Crushing Rock. I grinned, and said, "Good luck, Isabel."

I then walked about 15 yards away from her and held up my right hand to bring out the Rebirth Gear…..But nothing happened. "What the hell!?"

Asia then came to me and said, "What's wrong?"

"It's not coming out. I guess it's because I've been neglecting it."

She said, "Should I use my Twilight Healing?"

"Yeah, see if that can work."

She then held her hands over my arm, used the Twilight Healing, but nothing happened. "Huh. That's never happened."

I said, "Crap. I think Clark said something about using emotions. Let's see…"

I then closed my eyes, and started thinking of emotions like shock ...Nope. Sadness ...Nope. Maybe anger ...I then thought about Riser killing me, taking Rias…..DAMMIT! I then felt a bunch of fire around me, and when I opened my eyes, I saw the Rebirth Gear appear.

Ariz then spoke, "You seriously forgot about me!? Dumbass!"

"Come on, Ariz. I didn't really know how to bring you out after 2 weeks, I just thought if I thought about you, then you'd come out. Now I know anger works. Asia, stand back. I want to test out the abilities."

She then hid behind some trees, and I then started punching fire. "Oh hell yeah! Let's see what you can do. Hey, Isabel! Let's spar!"

I looked over, and I saw her grab Jonathan's arm as he was punching towards her. She then did a grapple and threw him so hard onto the ground he shattered! She then wiped the sweat from her forehead, and said, "What? Oh, alright. Let's see what this is about."

She walked up to me, and said, "What's the reason for the spar?"

I said, "I finally brought out the Rebirth Gear, and I wanted to see what all it can do."

She said, "Oh, awesome. Sounds like fun."

I took off my jacket, gave it to Asia, and said to Lewis, "I don't want you to burn up, so be with Asia."

He said, "Yeah, whatever kid."

"I'm 21! Whatever. Let's fight!"

She came at me with a combo of punches, and when I found a blind spot, I dodged to the left, and punched at her, but she dodged, and we both saw some trees get blown back by 3 feet. "Holy shit! At least that didn't hit you!"

She sarcastically said, "Yeah, I'm the lucky one! You gonna talk, or you gonna fight!?"

She then went for a kick, but I blocked it with my left hand. I then jumped, and focused some fire. "Whoa! I better stop!" I then landed and decided to punch with lower power.

She kept dodging and said, "I see you've been learning."

"Yeah, I've kind of been watching you during the breaks. I've got a lot to learn, though."

She then went for an uppercut, but I grabbed her arm, and threw her to the ground. I said, "And that's the match."

My Rebirth Gear then went away, and I offered Isabel my hand to get back up. She grabbed it, and said, "Thanks. You've gotten good. You want to learn the Fist of Flowing Water, Crushing Rock?"

"I'm good. I don't want to cramp your style. Well, that fight really took it out of me. Want to take a break?"

"Yeah. That guy, Jonathan, was pretty tough, but he was worth it."

We both then went back to Asia, who went back to our break spot. I sat down next to Asia, and said, "So what do you think will happen with Rias and the other Devils?"

Isabel sat down next to me, picked up a water bottle, and said, "Frankly, I don't know. Rias has faith in her brother, and I'll have faith in that."

I said, "You really like Rias, huh?"

"Yeah. When I first met her, her hair and natural beauty captivated me, but after I started hanging out you guys, I fell in love with her loving soul."

I said, "So did I. She's truly a caring person, willing to do anything for anyone she loves. I have hope things will work out, but we gotta stay strong and vigilant for her."

"Couldn't agree more."

"Hey, I got a good idea. Let's cook for her."

"Yeah, sounds like a plan. We can leave around 3 and pick up some steaks and other stuff."

"Awesome. Well, let's get back to it. I'll use some of your programs. Which ones did Clark give you again?"

"Well, the levels from weakest to highest are: Ryu; Ling Yao from the Fullmetal Alchemist world; Lui Kang; Jonathan Joestar; Genkai; Bang; Yoruichi Shihoin; Black Star; Kenshiro; and Son Goku."

"Goku, damn. I wonder how Clark was able to get that data from the Time Patrol. They're usually tight lipped about...Well, everything. Alright, I'll get started with Ryu. I want to see how I am with the Wandering World Warrior."

We then went to keep training, with Isabel fighting Jonathan again, and myself fighting Ryu. I brought out the Rebirth Gear and said, "Alright, let's see what that Satsui no Hado can do!"

-Road to The Grocery Store, 2:30 PM, Isaac's POV-

Shit! Isabel and I alternated between fighting the programs and each other, and I really can't appreciate the Rebirth Gear anymore! Not only does it give me increased strength and pyrokinetic abilities, but there's something….more. I can't put my finger on it.

But anyway, Isabel and I took Asia back to the apartment so we can pick out food for our date with Rias. I said, "So how are you liking the programs Clark got you?"

She said, "They are really good. When I was fighting them, I found out I could punch through those thick trees."

"Shit. I'm impressed. I almost wish you joined me in fighting Riser."

"Me too. So what is bad about Riser Phenex?"

"It's his pretentiousness. He believes he is nothing more than a God, and sure he has immortality, but both my strength and Asia's prayers helped me weaken him enough for Sirzechs to imprison him."

"Really? So prayer works on him?"

"Yeah, he is still a Devil."

"Damn. So tell me more about your universe."

"Well, I'm from a universe where clothing gives people power. My jacket is completely made of Life Fibers, which gives it power. This sword is too, except it's made of compact Fibers. I got it after I defended my now ex-girlfriend, Satsuki Kiryuin, from her mind-controlled sister, Ryuko. She and I defeated dozens of empowered students, and I even defeated her mother, Ragyo, which was controlling all of the Life Fibers."

"Really? I find that hard to believe."

"Seriously? You're using a martial art style from an alternate universe, fighting hard-light holograms of multiversal warriors, and you're having sex with a Devil, but me being from a universe where clothes gives you power is hard to believe?!"

"I…..Shit, you have me there."

I laughed, and said, "You know what, Isabel? I like you! Well, it looks like we made it to the store. Let's see what we can find."

-Isaac's Apartment, 45 Minutes, Isaac's POV-

We just got back from picking up some steaks, asparagus, and some strawberry cheesecake. Rias is gonna love this! Asia was sleeping on the couch, woke up, and said, "Welcome back, everyone. Isaac, Clark left you a message earlier."

"Thanks, Asia. We'll put this stuff in the fridge, and I'll call him back. Hey Isabel, while I'm talking to him, can you put the cheesecake in the fridge?"

She said, "Sure, take your time."

I put the steaks out, and went to the couch and turned on the holo-screen. "Hey, Clark. What's going on?"

He said, "Not much. How's the training today?"

I replied, "It was really good. I was worried about not bringing it out, but I then realized anger will work. Did you see anything being done to the battlefield?"

"I didn't really see anything. You and Rias have nothing to worry about. Isabel, how is the Fist of Flowing Water, Crushing Rock treating you?"

She went into the living room quickly and said, "It's done really well for me. When I was training today, I was able to smash through a solid tree. But I think I may vary it with some kickboxing or something."

He replied, "Awesome, and where's Rias?"

I said, "She's about to come back from school, but I think I'll have Akeno distract her for a while Isabel and I are going to have a nice dinner with her."

"Excellent. Well, I hope you all have a good date. And wish Rias luck for me at the Rating Game."

We both say, "Thanks, Clark. Later."

The holo-screen shut off, and Isabel then said, "Wait, it'll be too early for us to eat if we cook now. Let's go out and do something for a while."

"Not a bad idea. But first let's shower. That training got my all sweaty."

"Right."

-Park In Town, 20 Minutes Later, Isaac's POV-

We both got done relatively quick and took Asia with us to the park. Asia smiled and said, "Things got interesting for us when you first me, huh?"

I smiled and held her hand. "Yeah. I'm glad I met you and got you away from Raynere."

Isabel said, "Do you ever think if Raynere worked with anyone else?"

I replied, "Well, Rias said she had a few other Fallen Angels with her, but other than that, no. Why do you ask?"

"Just a bit of paranoia. You can't just think things are what they are."

"True. I'll see if Raynere had any bases around here besides the church. But I'm glad we're out here. Training is good, but just being out here to think is good. Honestly, I don't know how crazy things will be. What do you think, Asia?"

"I don't really know. This is way out of my depth, but I'll stand by you all."

Both Isabel and I smiled and we decided to head back home since the academy was about to let out.

-Isaac's Apartment, 20 Minutes Later, Isaac's POV-

We just got back, and when we got on the couch, I got a text from Rias saying, 'I'm bringing Akeno over to discuss what to do with the Phenex family.'

"Oh boy."

Isabel and Asia said, "What?"

"Rias is bringing her friend Akeno over for the Rating Game."

Isabel said, "I don't think I've met her."

"She protected me from being killed a few weeks ago. But she's very nice. I think you'll like her, Isabel."

Just then, a red Magic Circle then appeared, and Rias and Akeno then appeared. Rias said, "Hey, everyone, I'm home."

I said, "Welcome back, and nice to see you again, Akeno."

She smiled and said, "Nice to see you again, too, Isaac."

We all sat on the couch and Rias said, "Well, I brought her here because of the Rating Game tomorrow. If my brother loses tomorrow, Riser will be released. We're here to discuss what to do if that happens."

I said, "Well, IF it happens, we need to move you to a safe house. This ain't exactly safe since Riser destroyed this place a few weeks ago. I know, Akeno, you know of any places Riser can't get to?"

She said, "I know of a shrine near here. I'll take you there after the Rating Game."

"Awesome. Now we know he may come after me again, but Clark had me train my Rebirth Gear, so I'm prepared now. And Asia, I'll need you with me since your prayers worked during that fight."

She said, "Alright."

"Next up, I think we need some outside help…..Wait! Asia, you said some Exorcists may be looking for you, right?"

She said, "Yes. Let's see if Clark found anything."

I pulled up the holo-screen, and Clark said, "Hello everyone. What's happening?"

I said, "Hey, Clark. Did you find any Exorcists in town?"

"Funny you mention that. Two of them were found at Issei Hyodo's house."

Both Rias and I said, "You're kidding!"

"Yep. One of them, Irina Shido, is actually an old friend of his. But I'd be careful, both of them have Holy Swords, and not only that, but Excaliburs."

I said, "Wait, Excaliburs?! Like plural?"

Rias replied, "Yes, a few thousand years ago, the original wielder of Excalibur died, and to ensure there would always be someone to wield its amazing Holy power, they split it up into 7 swords. I think I'll need to call my Knight, Kiba."

"Oh yeah. That guy who helped me during the fight with Raynere. What does he have to do with this?"

"He was captured by the Church by a mass experiment to make children wield the new Excaliburs."

"I see. Well first, let's go see Irina and this other Exorcist."

We all teleported to outside Issei Hyodo's home.

-Issei's Home, Isaac's POV-

We all appeared, and I thought, 'This'll be weird. I was supposed to protect this kid by not letting him not know about this Devil stuff, but now we have 2 Devils here.'

Rias was about to knock on the door when it opened and 2 girls appeared: One with blue hair with a green fringe and big breasts, wearing a black leotard and white cloak with a huge thing wrapped up in cloth; and the other one had long brown hair and slightly smaller breasts, and the same leotard, but had a while string wrapped around her left arm. I said, "Well, ain't this convenient? You must be the two new girls here."

The one with blue hair said, "Who are you?"

Rias said, "Forgive him. He's my bodyguard and boyfriend, Isaac Fennis. I am-"

The one with brown hair interrupted Rias. "We know who you are, Princess of Ruin! Now you will pay for killing all those exorcists last month!"

Asia then got between us and them. "Stop! It wasn't them!"

Just then, Issei appeared and said, "What is-" He looked at me, and said, "I know you! You were doing that roleplay with that hot babe almost 2 months ago-SHIT!"

Just then both our arms started hurting. I gripped my arm, and Rias said, "Let's get you out of here."

We all started leaving with the Exorcists, and Issei said, "Dammit. How'd he get all those babes!?" He then closed the door.

As we were walking, I said, "There's clearly some misunderstanding. Asia wasn't taken by the Devils. Raynere, the Fallen Angel was going to kill her, but I stopped her. Now we need to talk to you."

The one with blue hair said, "And that is?"

Rias said, "Well, Raynere assisted the Devil, Riser Phenex, in a failed coup to force me into a marriage with him and kill my brother, Sirzechs Lucifer. But he is now in prison, and his family is planning to break him out."

The one with brown hair asked, "Where do we fall in?"

I said, "Well, if they do break him out, we want you to join us. We think your Excaliburs would be a great addition to our team."

They both paused for a second and then laughed! About a minute later, the on with blue hair said, "Oh, you're serious. Well, I don't see this as our problem. If they attack the Human World, then we would help. But we can't."

"Shit. Well, did you want to join us for dinner?"

Isabel said, "What about our plans?"

"Don't worry, we have enough for our guests."

We then walked back to my apartment.

-Isaac's Apartment, 15 Minutes Later, Isaac's POV-

I said, "Welcome to my home sweet home. Make yourselves comfortable everyone, Isabel and I are gonna cook something special!"

I got into the kitchen with her, and dropped my head. I said, "Damn, didn't think I'd cook for 7 people. You see anything else we can cook?"

We looked around and saw some chicken in the fridge. "Hm….Chicken alfredo sound good to you, Rias?"

She said, "Sounds good, sweetie."

-20 Minutes Later, Isaac's POV-

Both Isabel and I came out with 7 plates of chicken alfredo and the asparagus with a garlic butter sauce. I said, "You guys better be ready to have your minds blown!"

I gave Rias, Asia and Akeno a plate, and they all took a bite, and said, "This is incredible."

I grinned, and said, "Well, I do aim to please. Isabel, how did the other guests like it?"

She gave a thumbs up. "Well, let's dig in ourselves now."

We were eating, and I was thinking, 'Well, this feels natural. I just hope the Exorcists won't make much trouble here. Now that I think about it, they seem nice. I'm sure they'll help us.'

Rias said, "Dear, you did really well."

She kissed me, and I said, "Thanks, Rias. Isabel and I wanted to show our appreciation for everything you've done for us. But I kinda like this. No fighting, no anger. Just people eating and enjoying each other. I don't think I caught your names."

The girl with blue hair said, "I'm Xenovia Quarta."

The girl with brown hair said, "And I'm Irina Shido."

Rias said, "Nice to meet you, Xenovia and Irina. Do you have anywhere to sleep tonight?"

Irina said, "Well, we were going to stay at the church tonight."

I said, "Nonsense, you can sleep here tonight. My couch is always free for guests."

We all then finished eating, and Isabel and I washed the plates. Irina and Xenovia then passed out on the couch, and the rest of us went to my room. I said, "Well, that went pretty well."

Rias sighed and said, "It would have been better had they joined our cause. But I can have my friend Sona Sitri help us."

Akeno said, "I'll talk to her in the morning. Well, I'll be going home, and I'll see you all at the clubhouse for the Rating Game."

I said, "Thanks, Akeno. See you tomorrow."

She smiled and left. We all got on my bed with Asia cuddling up to me, Rias grabbing my arm, and Isabel cuddling up to her. I said, "Good night, everyone. And I hope Sirzechs can survive this."

Well, this is the beginning of something new. Isaac and Isabel were training to help Rias when they ran into Irina and Xenovia, and in the next chapter, the Rating Game will begin with unexpected results. Thanks for reading!

-Author's Note-

Well, I'm glad I could start this sequel story, because it's having me come up with new ideas, and I hope you guys enjoy it. If you want me to add or change certain things, let me know. I'm also going to make profiles for Isaac and Isabel. Thank guys!