End of the Summer Break

Xin looks at Koneko and asks, "So you want your formal training in Senjutsu right now?"

"Yes," Koneko said.

Xin looks up and sees the bright moon and the stars, it's already midnight and Koneko walks to his room to ask for special training.

"Do you think it's best if we do this in the morning?' Xin asked.

"No, it's better if we do this at night where everyone is sleeping," Koneko said. She picked this time because she wants to solo Xin even during this time.

"Well fine let's get started," Xin then sat on the grass while Koneko sat in front of him.

"Based on what is written on the scroll that Koroka gave last time, Senjutsu training is simple."

"The most basic and easiest method of learning Senjutsu is through meditation by concentrating on their state of mind and to quietly release their own ki as well as to sense the natural ki of their surroundings. It is also the best way to develop one's skill in Senjutsu."

"Like this," Xin then release the Nen from his body," This is Ki or Nen or Chakra, this is the life force, your aura and the energy inside of everyone"

"I train this by opening all the 'Aura Nodes' or the 'Meridian System' but for my case, all my Meridian is fully open and yours too," Xin said while applying Nen in his eyes.

He can see that Koneko's meridians are fully open, the only thing she can't do is to use it.

"Why not try to meditate first? Then I will try to use my Ki to you so that you can easily feel it" Xin said.

"Okay," Koneko then starts to meditate, she tries to feel the Ki in the surrounding, Xin then releases a wisp of his own Ki to Koneko.

"I feel it," Koneko said while feeling the Ki near him, its warm and gentle aura, she knew that only Xin has this kind of aura.

"Try to concentrate, i will change the nature of my Ki to the nature of Ki from the surrounding" Xin said then change his aura the same as Nature's aura.

"This one is the Nature's Aura, i has the ability to heal wounds and damage in the body"

Then Xin change it to the natural body aura," This one is our own Ki, it can help you to strengthen both their internal and external bodies"

"This time try to visualize the color of the aura that I will release," Xin changed his aura blue color.

A few minutes later Koneko finally visualizes the color of Xin's aura.

"The color of the aura is base on the element that the user has, Blue for water, Red for Fire, Green for Wood, Brown for Earth, Cyan for Wind, Yellow for Thunder, Gold for Holt,"

"Knowing the element that your opponent use is a huge help to you, you can counter it by using the weakness element of it an easy win at them,"

Xin let Koneko absorb and enhance her own Ki first until something happens to him.

Cat ears and tail appear from Koneko, she opens her eyes and pounces Xin, she playfully bites Xin's ears and licks his cheek.

"Are you okay?" Xin asks while looking at Koneko.

"Nya?" Koneko only hums like a cat and continues to lick Xin.

Xin observes her and sees that the Ki in her body is suddenly becoming chaotic, different kinds of Ki mix to each other inside of her.

Xin touches her head and starts to remove the chaotic Ki inside of her, Koneko who seems happy liking Xi suddenly snaps out.

She looks around and sees Xin's face full of her own saliva, she embarrasses and hides her face in Xin's chest.

"You overtrain again, you should absorb one energy at a time," Xin said.

"S-So it happens again…." Koneko embarrassingly said.

"So you know that this will happen so you ask me to train at night?" Xin asked.

"Umm," Koneko replied, she knew that this thing was going to happen, last time she also pounced on Akeno and Rias after she overtrained her Senjutsu and this time it's Xin.

Even when she feels embarrassed, she feels happy and excited at the same time, but she also annoys her when she doesn't remember what happened afterward.

Xin, who doesn't notice the tail of Koneko waving happily, starts to console her and help her until she masters this technique.

Of course Koneko happily accepts his offer, not only will she master Senjutsu she also will have time with Xin.

A time where she can fully occupy Xin without any annoying chicken that try to hinder her time with Xin,

( FYI that chicken is Ravel )

"Let's continue," Xin said.

Koneko nodded and started to practice again, this time she started to absorb one type of energy so that she could fully enhance her Ki.

But sometimes she intentionally absorbs a bunch of Ki so that she can have a fun time with Xin. Of course, she also tries to remember what happened after that.

.....

"Are you sure that you're not going to stay for more days?" Lady Lucifuge sadly said while hugging XIn.

"We really need to go back, i still need to attend at school," Xin said while trying to console Lady Lucifuge

It's already time to go back, the summer break ends and the new semester starts, Xin and her peerage need to go back to the human world.

But Lady Lucifuge doesn't want Xin to go back, she feels that one week is not enough, she thinks that she needs to ask for a long vacation for the principal of their school and that Sirzechs.

"Don't worry, I will go back on my next break, "Xin said.

"Mother let them go, they were already late on their trip," Grayfia said while trying to convince her mother.

After a few more promises and consoling Lady Lucifuge reluctantly releases Xin so that he can go back to the Human world.

"Take care Xin," Grafia said while giving Xin a tight hug, also herself don't want Xin to go but this is life, and Xin is still young he needs to experience this kind of thing while growing up.

Xin patted her back and whispered," You can go to my house later if you want to visit, you can bring your mother if she want to come"

"I will," Grayfia said and passed Xin at Shuri, Shuri tightly hugged him and asked to take care of her daughter while in the human world.

After that Xin and her peerage walk outside to teleport to the train station, the maids that Xin saved last time, they all line up outside and politely bow to them.

Xin feels that his time in the underworld is meaningful just seeing these girls and his new peerages, he is really glad that all that happens ends in the best case.