DxD: Milking System

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After both parties reached an agreement, Grayfia and Riser Phenex, with his peerage, returned to the Underworld.

Of course, as a dirty, arrogant scumbag, he scoffed at Jin and threw some remarks before teleporting away.

"Prepare yourself to be burned, human."

Such was his remark, and he was gone after the Magic Circle teleported him away.

The room was silent until the door was opened, and Issei entered. Maybe he entered because he felt strange that no one talked when previously there was a loud noise inside the room.

"Umm, is it over?" He asked Sona innocently.

"Yes. Now then, Rias. I will excuse myself first." Sona turned around and went to the exit. As she did that, she also grabbed Issei and forced him to leave. "You too, Issei-kun."

"H-HEY! Wait a minute. Waaiit…!!" His voice became drawn by a range as Tsubaki closed the door closely.

Feeling that the atmosphere inside the room became uncomfortable as Rias only looked down at the floor, Jin stood up and was about to leave.

"I think my role is over too. I will excuse myself first, Rias." Then he looked at Rias' peerage who stood a bit away from them. "I will see you guys tomorrow. I guess you still need time to process what happened, right? If you are curious, ask Sona for the details."

"Yes. Thank you very much, Jin-kun." Akeno said with a soft smile as she approached Rias. "It seems Buchou is still shocked. I will properly give our thanks tomorrow."

"Don't worry about it. Well then, I will return to my class."

"Sure."

With that, Jin left the room alone. He understood that Rias was still in shock because he changed the condition without consulting her. But that didn't matter.

'I just need to win.'

***

The school had ended.

The day passed ordinarily after he returned to his class. There was no contact from Sona or Rias whatsoever. Jin guessed they must be busy preparing for the duel that would be held in a week.

'While I just need to win, I need to get stronger first. Sona is busy, so there is only Kuroka at home. Well, I get a lot of EXP from her, but the problem is…'

"Are you really going to have a duel to get Gremory-senpai, Nii-san?" Issei asked Jin with a worried expression as they walked home together.

'Issei… I need to get him out of the house for a week. He better be thankful to me for this chance.'

"Yeah, I will."

"Damn! That's nuts, Nii-san. Isn't he a high-class devil?"

"He is. But I have an advantage that I can use against him." Jin grinned as he looked at his brother beside him. "Can you guess what it is?"

"Holy Magic?" Issei guessed.

"Correct. A Devil is weak against Holy Magic, so I have a really advantageous situation here. Being one on one duels will also make me able to concentrate greatly, so I will not have a numerical disadvantage. If we do a Rating Game, we will have fewer members than Riser, so that will put us at a disadvantage."

"I see! So that's why you asked for a duel instead of the Rating Game."

"Yes, also. I have a favor to ask you, Issei. Will you hear me out?"

"Sure! What is it, Nii-san? I will gladly help you. You have been helping me all this time, so it's time for me to repay you!"

"That's good! Then, can you stay away from the house for a week? Thanks."

Because of Jin's words, Issei stopped on his track and let out a surprised voice. "Huh?"

***

To shut Issei up, Jin gave him some of his pocket money and dropped him at the hotel where Asia stayed at.

If you asked how Jin got his money, the answer was Kalawarner. The girl gave him cash from her pocket and asked him not to worry about work anymore.

That was why he had a lot of money to pay for the hotel and such. He might even be the richest high school student, except for Rias and Sona. They possibly had no shortage of money.

After dropping Issei off at the hotel, he arrived at his home and greeted Asia. Of course, he whispered some dangerous things to Asia to help his brother advance his relationship. The girl's reaction was priceless; she flushed red down to her neck.

He was glad that she wasn't someone who was afraid of advancing her relationship.

Anyway, when Jin entered his home, he shouted loudly to greet the cat in the house.

"I am home."

As he had expected, a voice answered him almost immediately.

"Welcome back nya!"

From the second floor, a beautiful girl appeared. Her clothes were a bit sexy as she wore Jin's shirt. However, it was baggy when she wore it, and her cleavage was exposed.

When she ran downstairs, her boobs were jiggling up and down. Then when she reached the ground floor, she jumped at Jin, hugged her, and began to sniff his body around.

"Hmm?! This smell?"

"What, Kuroka?" Jin asked curiously. "Is there something wrong?"

"Nya!" Kuroka suddenly jumped back with a big smile on her face. "It's Shirone's smell nya! Did you meet her, nya?"

"Shirone?" Jin asked. He wasn't familiar with the name. But he connected the dot with what had happened this morning. "Could it be, Koneko-chan?"

"Yes, nya!" Kuroka exclaimed. "Shirone is her real name! Well, is she okay?"

"She's doing fine, I think. She's about to be in danger earlier from a scumbag that aimed for Rias, but I have helped Rias, so Koneko-chan will be fine."

"I see nya… So she's still with Gremory?" Kuroka sounded a bit sad but relieved at the same time.

Jin noticed that subtle feeling of sadness, so he smiled and patted Kuroka's head. "There, there. It is okay."

"Nya? What are you doing?"

"Patting your head. Why?"

"Rather than patting my head, why don't we have some fun upstairs nya?" Kuroka held Jin's hand above her head and licked her lips seductively. "You need some milk, right nya?"

Jin smiled at her. "Obviously. Rather, I won't let you sleep for a few days." He carried Kuroka in a princess carry and went upstairs.

"Oh! I am looking forward to it!"

"Yeah, it's time to grind some milk."