Yajin taught Asia all about the magic that Akeno was gonna show her as Whis even decided to teach her the different magic abilities she could use.

Yajin waited for his friends to arrive as he sat down on the edge of the cliff and got into deep meditation.

Asia: What is Yajin doing?

Whis: He's taken the time to meditate. A great way to train the mind.

Millet heard this and went to her own spot to start her own meditation.

Whis: I haven't seen him this eager to train for quite a bit. This Riser fellow must have ignited his Saiyan blood to fight. His desire to fight and his love for all of you must have given him a reason to increase his training.

Asia smiled as he walked to Yajin and hugged him.

Asia: Thank you big brother.

Yajin smiled softly as he hugged Asia back and kissed her cheek.

Yajin: Hurry with Whis. So you can be stronger. I believe in you.

Asia nodded and ran to Whis as both continued to train her magic.

Beerus: If your going to be doing this then you need well motivation. Whis. Give the boy a new training outfit.

Whis: Yes, Lord Beerus.

Whis tapped Yajin's head and his outfit changed as Yajin was slightly surprised of the new gi but he had a feeling.

Yajin: This Gi gives me like a some kind of Dejavú vibe. Like I've worned this before.

His smile immediately left his face as he got right back into his meditation. Riser never left his mind, he knew one thing. If he wanted him dead, he would have been.

Eventually hours passed and Yajin saw the time, it was close to 24 hours and he then heard sounds of wood breaking and he turned around to see Rias and the rest walking up the hill, extremely tired and slightly damaged.

Yajin: Good job, come on. Let's get you guys patched up. Whis.

Whis tapped his staff and they were fixed up. Rias smiled and hugged Yajin.

Rias: Thank you again for doing this for us.

Yajin: You don't need to thank me, Rias. Koneko, your up first.

Koneko: Cool.

Yajin smiled and walked inside the chamber with her.

Everyone wondered what kind of training both would do and how strong Koneko would come out.

(Inside the Chamber)

Yajin: Alright Koneko, I need you to rely on not just your strength but also your other senses. Your sight, your hearing. I'm going to teach you how to use Ki to increase everything.

Koneko: Got it. Teach me everything you know.

(Outside)

On the outside, Rias was looking at the door from time to time.

Kiba: Worried for Koneko or something else?

Rias: It's just...I'm worried of the training and how Yajin will help us grow. Wouldn't be better for all of us to spend the nine days in there?

Whis: I would say that is not a recommendation, Lady Rias.

Rias: H-How so, Whis?

Whis: That chamber is unpredictable and Yajin couldn't focus on everyone at the same time. It's not only taxing to one's body but also in the mind. He made the right choice of bringing only one person at a time. Trust in the boy.

Rias looked at the door and nodded. Her and rest continued to train and eventually after one day, Koneko and Yajin walked out. Koneko seeming to be more confident in her strength.

Koneko: Hey.

Akeno: I can say that she's more confident now.

Yajin smiled and before he chose his next partner, he decided to get some food.

Yajin: Man whoever made this, must be an excellent cook because this is delicious.

Asia: Thank you, I tried my best.

Yajin smiled and eat until he was full.

Yajin: That hit the spot. Alright Kiba, your up.

Kiba: Understood.

Rias: Yajin, wait!

Yajin turned around as Rias walked to him.

Rias: Thank you for training us. I know you don't have to-

Yajin: Actually it's because I do want to help. Just do one thing in return.

Rias: That is?

Yajin: Beat that Phenex asshole to an inch of his life.

Rias smiled and had a light chuckle before nodding and hugging Yajin. The Saiyan hugging back and then walking with Kiba inside the chamber.

Once inside, Yajin would teach Kiba about Ki as he did with Koneko and even train his swordsmanship much more fluently.

Yajin: Move your body while focusing on my movement not on the strength of my swings.

Kiba fought with all his might and they got stronger in their own rights.

Yajin: It's all on the timing. Relax your body, your mind and focus on hitting at the last second of striking to bring out your strength. It's difficult but not impossible.

Kiba: Understood.

Each strike was now more fluid and Yajin could see how quick Kiba was on adapting. Slowly Kiba started to push back Yajin however much like his ancestor, Yajin punched Kiba back before he could be beaten. The blow was enough to knock out Kiba.

Yajin: Shit...I hope he doesn't remember this.

(Outside)

Beerus: If you want to prove yourself then you need to gain more strength, Princess.

Rias: But how can I even trust myself if Riser has never been beaten. He's technically immortal.

Beerus: His healing has a weakness. You just need to find it. Blonde girl, bring some more food would you?

Asia: Oh! Of course Lord Beerus!

She said with a smile as she ran to the kitchen and made more food. Rias could see how much responsibility she has and it motivated her to get stronger. She made the decision to go inside the chamber next. She had to get stronger. Issei was trying his best training with Koneko but she just threw him around and beat him.

Akeno was training with Millet, both doing practice shots and how quick Akeno can use her reflexes.

Asia was enjoying her time being a cook, even if she couldn't fight she could be a real help making people happy with her food.

Whis: I must say Asia, you are quite the cook. Have thought about being a personal cook for Lord Beerus?

Beerus: Don't be silly Whis. It's obvious she won't join since her friends are on Earth. We would be heading to Earth more than we want to.

As a few more hours passed, the hour glass finally dropped its last bits of sand.

Whis: It's time.

Everyone looked at the chamber door and watched it open. Both Yajin and Kiba walked out, no changes but Kiba had his outfit destroyed.

Yajin smiled as him and Kiba shook hands and Kiba went to get changed.

Rias: Great job Kiba. I can tell you gotten stronger.

Kiba: It was thanks to Yajin. He's an incredible teacher. Though he did go overboard a few times.

Yajin smiled and took a shower and got ready for his next partner.

Rias: Yajin. I'm going next. I want you to teach me everything you can.

Yajin: I was saving you for last but...who am I to deny you? Let's go Rias.

They walked inside and Rias looked at everyone before the door closed.

Rias: See you in a week.

Once inside she saw the void and could feel the intensity. Yajin started to stretch.

Yajin: Alright then. It's time to begin Rias. Remember this...this is gonna be tough.

Rias: I wasn't expecting anything less.