-Last time on Twin Ghouls of Kuoh-

"Our kagunes changed." Nashiro said. "Did our RC cells changed." (Y/n) said. "Could it be." Nashiro said. "It's just a theory maybe when we ate the flesh of the dead fallen angels. For now let's head home." (Y/n) said as Nashiro nodded as the two headed home.

Readers pov

The events from last night were still a blur to me and Nashiro our rinkaku turning into Ukaku when we ate that fallen angel flesh. 'Rias game probably starts after school.' I thought to myself writing in my notebook. "Ms Yasuhisa can you solve this problem please." The teacher said as I went up to board solving the problem with my work backing it up as I circled my answer. "Done." I said. "Correct seems you have payed attention in class." The teacher said as I went back to my seat to hear the bell ring.

Everyone was getting up from their seats seeing that it was lunch break. "Let's go see Rias and the others." I said looking at Nashiro as she nodded. We walked to the school building where Rias and her club would usually be. "Excuse us." I said walking inside. "Nashiro, (Y/n)." Rias said. "Are you guys ready." Nashiro said. "We are but the game will be after school." Rias said. "Wish we could come and watch but me and Nashiro got our own things to deal with after school." I said. "We wish you the best of luck." Nashiro said. "Thank you coming from the both of you." Rias said as we both nodded and left the ORC.

-After school-

Third person pov

The twin left the academy to head to Anteiku to ask some questions about their sudden change in kagune. Both of them had questions in their heads of why the sudden change in their kagunes anatomy. The two soon made it to the shop seeing that it was Enji working behind the counter. "Hey you two what can I do for ya." Enji said. "We need to talk to Yoshimura is he here." (Y/n) said. "The manager went on a short errand maybe I can answer what's on your guys mind." Enji said.

The twin sat down near the counter while Enji was prepping the coffee. "Think you can flip the sign just in case any human customer come in." Enji said as Nashiro went outside and took the sign in and flipped the open sign to closed. "Yesterday me and Nashiro encountered and killed two fallen angels coming from here last night." (Y/n) said. "So you took care of them." Enji said. "Yeah then after that we consumed the flesh of the two that was when we felt the surge of power increase." (Y/n) said as both twins revealed their new kagune wings. "Interesting ghouls usually don't have a change when consuming flesh of things they killed." Enji said placing two cups down as the twins reversed their ghoul state.

"Even so the change of your kagune would mostly affect your kakuhou since yours was a rinkaku it would be at your back and waist while what you have now is an ukaku which is at your shoulder area." Enji said as the twins were pouring creamer. "Do you know anyone else with that type of kagune." Nashiro said. "Touka is the one that comes to mind." Enji said as yoshimura came in. "Manager." The three of them said. "(Y/n), Nashiro what brings you here." Yoshimura said. "It's about their kagune sir." Enji said. "Their kagune." Yoshimura said as the twin showed Yoshimura. "An ukaku." Yoshimura added. "It had to do with the fallen angel encounter we had when leaving work." (Y/n) said. "When we ate the flesh of the fallen angels that when the change happened." Nashiro said. "I know it's impossible for ghouls kagune but the only answer is the fallen angel flesh you two ate. It gave you the traits of a fallen angel which meant your rinkaku turning into an ukaku. Also fallen angels possess weapons known as light spears." Yoshimura said as the twins tried to summon these light spear making it appear in their respective color. "Whoa." Both twins said as the spears disappeared. "Yet even the change in kagune you two still have your fast regeneration." Yoshimura said.

"Even so what does that make us." (Y/n) said. "Almost a fallen angel ghoul hybrid." Yoshimura said as the twins looked at each other. The four of them heard the door ring. "Ahh sorry we're closed." Enji said as the twin looked to see it was the silver haired maid from the other day. "Are you the Yasuhisa twins." The silver haired maid said. "We are." (Y/n) said as they were handed a pamphlet which a circle on it. "This will transport you to the underworld where the engagement party is being held." The maid said. "Engagment party." Nashiro said as the maid was no where to be seen. "Whatever happened to Rias knowing the result of her game." (Y/n) said as Nashiro nodded. "We gotta go and take care of this." (Y/n) said. "We wish you two the best of luck." Yoshimura said as the twins ran out of the shop.

-At the underworld-

Issei's pov

"Issei." Rias said. "Rias." I said. "What's going on was this your doing lord riser." A noble said. "No but guards seize him." Riser said as the guards were about to come at me. I saw red shards impact their bodies. "what I don't have an ability like that." I said. "Seems the party is about to start." A familiar voice said. "Indeed sister." Another voice said as the nobles were talking with one another. "Another party crasher
on risers big day." Riser said. The two figures then took off their masks.

"Seems we made it in time Hyoudou." (Y/n) said. "(Y/n), Nashiro." I said. "Who are these two." Riser said. "Another pair of guests I've invited." A voice said coming out almost similar to Rias.

"Who that." I said. "My brothers here." Rias said. "That's your brother." I said. "It's the great devil Lucifer." A noble said. "Man that's hardcore." I said. "What is the meaning of this." Riser said. "I've saw the games riser I'm surprised you were almost brought to your knees by a beginner." He said. "It's the results that count." Riser said. "The games aren't what they used to be besides it's a rare occasion we have things like these. You three one of you possess the power of a dragon while the two of you possess something that we have never seen." He said. "I see you want a fight." Riser said. "Dragon vs phoenix along with our mysterious guests." King Lucifer said.
"I'm sure everyone would like that." He added as he set up the area.

Third person pov

In the room Rias' brother asked what issei wanted for as compensation a title, a beautiful woman, unimaginable power. "I want Rias gremory." Issei said as Rias' brother looked at the twins seeing if they wanted anything for compensation as (y/n) looked at Nashiro. "Well think of ours soon." (Y/n) said as Rias' brother nodded.

Issei was teleported with Riser into an arena where everyone was watching as the fight began between the Dragon and the Phoenix.