( Sona's POV )
After making it clear what I thought, it was my turn to question Rias.
Sona: And you, what are you going to do?
Rias: I don't know yet, I don't like how I treat my dear servants.
Sona: Maybe so, but the opportunity to train with someone at the level of a demon king doesn't come very often.
Rias: what? You think he is as strong as my brother.
Sona: I don't know for sure but I do know that underestimating him won't do us any good, the safest thing is to consider it at that level.
Rías: Should I inform my brother about that?
Sona: Yes, I'll leave you to think, I have to prepare for tomorrow.
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( Yuuki's POV )
After leaving the academy, the girls and I spent the rest of the night fixing up the abandoned mansion, we bought the place to turn it into more of an official base, We always continue to monitor all the worlds where a reincarnated person has appeared, after all, It is very possible that more reincarnated people will appear again.
The most important thing in the process was a portal door that connected directly to our castle, Yumina, Lu, Leo, and Hilde volunteered to take care of my royal duties while our deal with the devils is decided, But in case of emergency, we can take care of it quickly.
In the morning I left the mansion to see if any of the devils decided to show up, and they did, all the young devils showed up, although some were not very enthusiastic, that boy Saji in particular.
Yuuki: Wow, I love seeing so many excited about getting stronger.
I welcomed them with a smile but the boy Saji approached me in a threatening manner.
Saji: Listen, friend, I came here on orders from the president, but if you make any move on her, you'll deal with me.
Yuuki: move? What do you think I'm going to do?
Saji: feel her body while helping her stretch, look at her body while she runs covered in sweat, I know what you're trying to do.
Sona: Saji that's enough.
Yuuki: Hey, I don't know what kind of person you think I am, but I wouldn't do that, and there are forty-six girls who would kill me if I ever did something like that.
Saji: huh? Who are they?
Yuuki: My fiancees, now let's go, we are burning daylight.
The young devils were surprised by what I said but we couldn't delay the training any longer so I hurried them to move to the back of the mansion where our training ground was prepared, where all my Sekireis were already training, Regina created a device that created an area of high levels of magical energy equal to the place behind our castle, another incredible job well done by Regina and Matsu.
Yuuki: Very well, we start with learning to walk.
Rias: did you say walk?
Yuuki: As I said, you need too much training and we have to start with the most basic, go along the track until you can walk normally.
Rias: what?
With a snap of my fingers, I teleported the devils onto the track and increased the gravity until they were at their knees.
Yuuki: Listen, when a battle drags on, your body will not respond to your commands and will feel like it weighs a ton, in a real fight you will have to get used to at least this or you will die.
The devils began to walk with difficulty very close to the ground almost as if they were crawling, Devils were naturally superior to humans so soon they were walking straight, but that wasn't fast enough, they needed motivation.
Yuuki: I understand that you devils participate in team competitions called ratings games, What if the team that shows the best results can have a rating game against me, it will be like a rematch of our fight yesterday.
What I said seemed to interest the devils and soon they were trotting around the track, After that I removed the pressure on them and they immediately fell to the ground tired, and they breathed a sigh of relief.
I called our healing squad, which was Ku, Shizuka, and Ayaka to re-vitalize the devils, I also brought them something to eat and drink so they would recover their energy.
Yuuki: You did well, when you recover, we will have a race.
Rias: I guess you'll be weighing us down, like before.
Yuuki: No, in fact, it will be a little worse than before but I will give a small gift to the winner, so do your best out there.
As I said, I increased the gravity intensity even more but they performed quite well, Obviously those who depended on physical strength to fight did better than the magicians, and the first to cross the finish line was the little girl Koneko.
Yuuki: congratulations Koneko, tell me, do you like sweet things?
Koneko: um I guess.
Yuuki: Preparing desserts is one of my hobbies and I prepared this using all my skills.
Koneko's prize was a crepe specially prepared by me, I was quite confident with the taste but I was also interested in Koneko's opinion, When she took a bite her eyes sparkled and I knew she loved it.
Koneko: um it's delicious.
Yuuki: Thank you, I put a lot of effort into this creation.
Rias: Hey Koneko, can I have a bite of that?
Koneko: President, this is my reward.
Koneko shielded her dessert from Rias and she ate enthusiastically leaving nothing to share, well she earned it fair and square.
Yuuki: Don't worry I can prepare something for all of you later, now is when the real training begins, For this one, I am going to divide you into two groups, those who fight primarily with magic and those who do not.
After dividing the youths, I moved with the physical fighters, I put my hand on the ground and created a huge four-armed wooden golem.
Yuuki: Your test is quite simple, defeat this golem, any type of weapon is allowed but not magic, except for magic that increases physical power, have fun.
I moved to the second group, and when I got far enough away the golem started attacking, I will be surprised if they can defeat it in less than an hour.