Time passed quickly, in a week of pure training. Issei got used to the balance breaker to fight with Koneko and Kiba.
He also fought with Rias and Akeno, the two of them were like fighting against a moving magic cannon.
Akeno taught him to use his devil wings and learn to fly. And with the balance breaker armor, it now has twice the mobility through the flight.
When he fought with Rias he was also surprised why his attacks did not damage her, whether physical or magical.
The system gave him a lodge-type devil's fruit, modified to use the power of destruction.
Rias said that that ability is not invincible, it is still vulnerable to the magic of light and sacred. It also depends on the magical power to become elemental.
Basically, if she runs out of magic, Rias can receive damage, even so, she is much more powerful than the original Rias of the anime.
In his magical training, issei learned two movements, followed Akeno's advice.
And with the help of Ddraig he made a magic that can throw fire, Issei imagined his magic as a flamethrower that comes out of the hand.
Now add the power of the sacred gear using Boost. Magic can grow in area damage and the flames are hotter and have more range.
If issei adds the ability to cut healings and open wounds. Then he can do good damage to the enemies.
Then he learned another magic of the same type, but now it was a completely pure magic attack.
Issei simply gathered magical power in the sacred gear glove and after doing Boost.
Issei launched the magical power and shot like a laser, impacting the hill he created a moderate-sized explosion.
Maybe enough to make a normal two-story house disappear. And the more increases you have, the stronger the explosion.
But faster it runs out of magic. Then Issei will have to control how much magical power he uses in each attack.
It can be said that that week of training was a success, at least for Rias and Issei, to train their new powers.
And it can also be said that Akeno joined the shared bathroom activity of issei, Rias and Asia.
Blessed be life in a world of fan service thought Issei. He wanted to release some stress, so he took a look at Rias.
Rias knew more or less that she wanted Issei, but she refused, She told him that if they win the rating games, then they can do anything Issei wants whenever.
Rias did not miss the opportunity to motivate Issei more. She really already saw Issei as a couple.
But as long as the compromise is not resolved, it will not take the next step to formalize.
- - - -
On the day of the rating game they were in the underworld in a stadium, the parties involved and other beings who joined the fun.
Nothing too formal, it was more of a private game with some important figures watching it.
On one side was the Gremory family, who are Zeoticus Gremory, Venelana Gremory, parents of Rias Gremory.
On the other side was the Phenex family. Lord Phenex, Lady Phenex.
There was also Rias' older brother, Sirzech Lucifer. Also known as Satan Lucifer.
He is one of the four maōs of the underworld.
Next to Sirzech was his queen Grayfia Lucifuge, who is also his wife. Known as the strongest queen of the underworld.
There was also another of the four Satans, it was Leviatan Serafall, she went to support her friend Satan Sirzech.
When the two maōs got together, Serafall asked Sirzech, "do you think your sister can win?"
"From what I heard from Grayfia, my little sister has in her nobility the bearer of the boosted gear. Maybe they can win if they use their powers well." Sirzech replied
"Well, Rias must win if he doesn't want to marry that bastard Riser." Serafall said.
Look how to curse Riser when his parents are here, only someone as carefree as Serafall will do it. Grayfia thought.
"The good thing is that my little sister so-tan decided to fix her marriage in a different way," Serafall said.
"And if someone tries to force her into a marriage, I will levitan stop him at all costs."
Sirzech ".."
Grayfia ".." she thought those two Maōs have sis-con problems with their sisters...
Grayfia said goodbye to the two, she went for Rias and her nobility to start the rating game.
- - - -
In the room of Rias' club, everyone was already gathered, they were just waiting for them to go for them.
The door opened and Sona Sitri and her queen Tsubaki entered. "Rias, are you ready?" Sona asked.
"Of course I'm ready." "I will won this rating game and I will end up with this arranged marriage."
"Don't lose Rias, I'll be watching you and good luck in your game." Sona nodded, and went to the student council room.
After Sona left, a magic circle appeared on the ground, from there Grayfia Lucifuge came out.
"Rias, it's time for the game to start. Go to the magic circle and you will appear at the place of the game."
Rias got up with all his nobility and went to the magic circle. After Grayfia activated it, they appeared in the same place.
Asia asked "did the magic go wrong to travel?"
Rias shook her head "no, now we are in an alternate dimension, created for rating games through magic."
"Look at the sky outside the window, you can have green airs."
"Attention everyone, I Grayfia Lucifuge, Queen of Satan Lucifer, will be the judge of this match between Rias Gremory and Riser Phenex."
"In agreement between the Gremory and Phenex houses, the meeting place is at the Rias Gremory school."
"Giving her advantage of the land, for having fewer pieces of the devil as nobility."
"The Rias Gremory base is located in the old school building."
"And the Riser Phenex base is located in the new school building."
"Now I start the rating game."