After Riser collapsed from the damage of the Immortal Flame Seal and the backlash from what his father gave him, Lord Phoenix teleported onto the field and tried to "block" Chojusen from dishing out a finishing blow by throwing a Phoenix flame at Chojusen. Without releasing his own Satan Source, the greatest attack Lord Phoenix — or any Satan Class or above Devil — could pull off was at the Emperor Class.
Chojusen easily dispelled the peak-tier Emperor flames with his holy flames and said "Do you also need a beating?" Chojusen wasn't as mad as before, but the Phoenix Clan sure had a way to push his buttons.
Sirzechs teleported in front of Chojusen and smiled at Lord Phoenix. He said "Clearly, Riser lost. Now, kindly give Chojusen his prize."
Lord Phoenix was almost having a mental breakdown. He couldn't remember the last time someone humiliated him this badly. But, the last shred of wisdom in his hateful head convinced him to accept this obvious loss with some grace and give Chojusen his daughter; lest he lose even more face, by behaving like a spoiled brat.
Chojusen was about to insult and condemn this stupid Phoenix patriarch about how he didn't want his daughter or something along those lines. But in a twist of fate, Ravel teleported to the field with her phoenix teleportation seal and jumped on Chojusen, before he could try his hand at insulting anyone. Ravel was dressed a formal red dress, she looked at Chojusen while blushing, and said "Don't be too mean to me in the future."
Chojusen couldn't help but say "What the fuck? Why..." Before he could continue, the ever scheming Sirzechs said "Till we meet again. Don't go too crazy with the prizes you've won here tonight~" He then used his Satan source to instantaneously teleport Chojusen and Ravel back to his room in the Human world.
…
Back in Chojusen's house, Chojusen and Ravel crashed onto the floor of Chojusen's room. Ravel and Chojusen ended up in a "suggestive position;" it looked like Ravel had pushed Chojusen down and was ready to eat him. Ravel's face became extremely red and she gave Chojusen a quick kiss on the cheek. She said "Now that I'm yours, you need to work hard to not lose me~"
This Ravel was quite the character. She saw men in even simpler terms than Chojusen before his incident with Akeno. To Ravel, Chojusen was the perfect mate because he was handsome, he was strong, he was "assertive," and he didn't fear her or her family even if they were Underworld royalty.
Chojusen wasn't exactly thrilled to be with a Phoenix after the two consecutive fights he just had with Riser. However, this Ravel was sincere, so he wouldn't take out his anger on her. Chojusen lifted her off of him and as he thought about what to do next, he realized that Rias was off to the corner of the room watching him in shock.
Rias was still in her engagement dress, as her silly brother directly teleported her to Chojusen's room after he put the Immortal Flame Seal on Riser. This was also a part of his scheme, but it didn't exactly play out how he imagined. After Chojusen got up to his feet, Rias gave him a hug and whispered in his ear "Thanks for being my prince charming~"
Suddenly, Akeno entered Chojusen's room. After she took in the situation, she smiled and said "Oh? You already brought her back?" She was surprised as less than an hour had elapsed since the time Chojusen left to start the rescue mission.
Rias looked at Akeno with caution and asked Chojusen "Why is she here?"
Chojusen didn't respond, it was Akeno who said "This is where I live now." Akeno had a pretentious smirk on her face as she gave Rias and Ravel meaningful looks.
Then Rias and Akeno started a cat fight, after Rias got jealous of Akeno beating her to the number one position. Somewhere along the fight, Ravel joined in and the three way standoff only ended when a sleepy Asia entered the room, wondering what all the noise was about. Rias and Ravel became even more jealous as yet another girl beat them to Chojusen and the intensity of their cat fight escalated to the point where Issei's parents got up to check on the noise.
You can imagine their surprise when they saw four drop-dead gorgeous girls fighting over their son as if he were a treasure. It was three in the morning and this was what their son was up to? Rias seemed to like using demonic manipulation to persuade Issei parents, as the latter became a bit drowsy after looking at her eyes and left back to their room mumbling something about this situation being normal.
Chojusen swore he would learn this technique sooner rather than later and promptly returned to address the situation on hand. Chojusen said "Rias what do you plan to do now?"
Rias looked at Chojusen, her face a bit red, and said "Well, its too late to go home so I guess I'll just sleep over~" Chojusen knew it was bullshit; she had teleportation seals and the teleportation he taught her...
Ravel added in "Me too!"
A couple black lines formed on Chojusen's head as he thought about what to do. He couldn't give some of the girls preferential treatment and send them to his personal dimension; that decision would most certainly come back to bite him in the ass… Chojusen sighed and created a couple more beds with his Armament Creation Skill and returned back to his never ending training; he knew that he didn't have enough strength to take on the Underworld with figures like Lord Phoenix and Sirzech running around, so he wanted nothing more than strength right now.
All of the girls — especially Akeno — were disappointed that he wasn't in the mood for romantic activities. However, they had all had a long day and wanted some sleep. But… Rias couldn't sleep unless she was naked, so she took off all her clothes and hugged onto Chojusen's while he was still in his meditative position before falling asleep. None of the other girls wanted to lose to her, so they all followed suit and Chojusen was covered in naked beauties while he tried to increase his strength…
A couple hours after all the girls went to sleep, Chojusen could feel several magical energy fluctuations rearranging the structure of his house, but upon noticing that they all had the signature seal of Gremory on their magic, he ignored them. The next day, Chojusen opened his eyes to see the pile of girls still naked, covering him, but now his house had become a mansion…
All these girls… they had no idea how their reckless behavior tempted Chojusen to no end. However, now was not the time for that, they had to get ready for school! Chojusen moved the girls out of his way and covered them up with uniforms he conjured out of his Armament Creation Skill — truly the most useful skill.
...
For the next couple days, Chojusen's life went back to normal. Go to school, train at the Occult Research Club, go home and continue training. The only new feature to his routine was that he now had to entertain the entourage of four girls that followed him everywhere.
A couple days after the fight with Riser, Chojusen entered the Emperor Class; reaching tens of millions of points in power and magic. He only needed one more breakthrough before he could go back and fuse with the true body.
The next important event didn't take place until a couple weeks after Chojusen entered the Emperor Class. One day, two members of the church appeared in Chojusen's house. Rias, Akeno, and Ravel were all deathly suspicious of these believers, but, Chojusen and Asia didn't really care who they were.
When Chojusen entered his house that day. A tight-suited nun who donned twintails called out to him, she said "Issei~ You've grown so handsome after some many years."
Chojusen looked at her and said "Sorry? Who are you?"
Issei's mom spoke up and said "Irina, please forgive him. My son lost most of his memories a couple months ago. His special amnesia is probably the reason he doesn't remember you."
"Oh. I'm sorry to hear that… I hope you recover your memories soon~"
Another nun that was next to Irina then said "Well, if he's lost his memories, we won't find what we're looking for by asking him. Let's leave." This other nun also wore a skin tight black suit, but she had short blue hair.
"Xenovia! Don't be rude to my childhood friend!" Even though Irina said this, she still followed Xenovia out of Chojusen's house.
Before leaving though, Xenovia looked back at Chojusen, or more specifically, the devils next to him. She said "I'll see you around tomorrow..." As a nun she deeply resented devils.