Yajin was in school as he also had Millet join the school for cover and to keep an eye on her. However he got word that Issei had an interaction with a girl who was part of the church.

Yajin: I get why she's worried. It's pretty much like going into war without having a full army. She'll be outnumbered.

Akeno: Exactly. Which is why we need to be careful with who we interact with. Like how we waited until we knew that you were a kind and handsome guy.

Yajin blushed as Akeno got closer making the young Saiyan blush even more.

Akeno: What's wrong? Getting nervous?

Akeno got on top of Yajin as he laid on the couch and she held his cheek.

Akeno: I like shy guys but especially muscular shy guys.

Yajin chuckled nervously as he then heard the door opening as he saw Rias walk in.

Rias: Akeno. Leave Yajin alone, we don't want to make him uncomfortable.

Akeno: Aww~ I was enjoying our time together. Didn't you, Yajin-kun~?

Yajin blushed as Akeno smiled and gave a cute chuckle however things got serious when she told Rias that a stray was located nearby thanks to her sources.

Everyone including Yajin and Millet joined to take out this Stray.

Millet: I don't understand why I have to be here.

Yajin: You really think I'm going to trust you that easily. We're allies but we're not to that point yet. Plus we might wanna see how these guys work so to see how we can get stronger ourselves.

All of them walked inside the location of the stray and saw a woman who was naked however Yajin and Millet could feel the negative energy inside her.

Rias: Viser, you will pay for crimes you have committed and for leaving your master!

Viser: Oh shut up you slut. You are just jealous that your breast aren't as firm as mine!

She rubbed her breast as Issei smiled at the sight however Yajin got on guard with Millet creating a bow and arrow.

Rias: Kiba!

Kiba held his sword and moves so fast that it seemed like he disappeared however Millet and Yajin were able to see him easily.

Rias: Kiba is my knight, his attribute is speed. Koneko.

Koneko walked forward as Viser used her giant mouth to eat her however Koneko opened her mouth by force and punched her away.

Rias: Koneko is my rook. Her attribute is simple, she had an unparalleled strength.

Yajin was impressed of their abilities but he saw how him and Millet could easily beat all of them.

Akeno walked up next as Rias spoke up.

Rias: Akeno is my Queen. Her attributes are a combination of all my other pieces, she's simply unbeatable.

Millet: Tch.

Akeno shot lighting at the stray and Yajin noticed how much she was enjoying the torture.

Yajin: Is she enjoying this?

Rias: Akeno, she's had enough now.

Akeno: Aww, over already. I was just starting to enjoy myself.

Rias walked forward and ended Viser with a single blast.

Rias: That's all. Let's go home.

They agreed but Issei asked Rias what evil piece he was.

Rias: You're a pawn.

Issei: But I don't wanna be a pawn.

Rias: I'm sorry but that's what you are.

Issei: But that blows.

Yajin chuckled at the fact that Issei doesn't realize how valuable pawns are in the game of chess.

Eventually they had back to the ORC and Yajin does some image training with Millet as both were doing their best to improve in their techniques and movements. Rias sent Issei to another request as the night was still young.

Akeno leaned into Yajin's back and started to tease him which caused the Saiyan to lose his concentration as Yajin blushed and got nervous around her.

Rias chuckled at the antics but helped Yajin out. Millet was annoyed that their training was interrupted.

Rias: Akeno, you should leave them be and let them train. Besides we don't want to upset Lord Beerus because his student wasn't getting stronger because of us.

Yajin chuckled at the mention of Beerus and he wasn't worried since he knew he could convince the god to not destroy his friends.

However a sudden change of tone made everyone notice something was wrong. Both Yajin and Rias felt that something was wrong as Rias made a portal to Issei's location. Yajin used his instant transmission to reach him and quickly kicked a man who was supposedly a priest.

Yajin: Issei, you okay?

Issei: Hidashi?

Yajin smiled but kept his focus on the priest who aimed his gun at him and started to speak in a vulgar tone to all of the girls as he commented about Akeno's body and Yajin kicked him through a wall.

Yajin: Disgusting pig. Maybe I can make an exception to my killing rule.

Koneko: Fallen Angels incoming.

Rias told Yajin to leave the priest and retreat with them as Yajin gritted his teeth in anger but he complied as Koneko took Issei and Yajin carried the nun who was called Asia.

Yajin: Hold on.

He placed his fingers in his head and transported back to the ORC.

Yajin: Are you okay?

Asia: I am. Thank you...all of you for helping me. This has truly been a blessing.

It was a kind gesture from her but it hurt the devils as they held their head in slightly pain.

Yajin: Please try to refrain yourself from praying. They are devils and they aren't fond of that.

Asia: Apologies. Please forgive me.

They all smiled as Yajin told them to keep her safe. Rias agreed and even offered her the role as her Bishop to Asia. However the young nun was still a believer but she was in the thought process.

Yajin: Take the night to think about it, I'll be back tomorrow. Night guys.

He waved as him and Millet used instant transmission to return to his home. Raynare was happy to see Yajin as she ran to his arms and hugged him.

Yajin: Say Raynare, I need some info that I think you can help with.

Raynare: What's up?

Yajin: Do you know a priest that is bad shit crazy?