“……”

Mito was speechless for a while when he heard Kushina's words, and even showed a skeptical expression.

Seeing that she didn't believe it, Jiu Sinai hurriedly said her previous analysis.

After hearing this, Mito also felt that only this simple and crude reason could explain Natsuhiko's abnormality.

So she could only smile helplessly.

After all, this is really an unexpected and reasonable answer.

Sometimes the aesthetics of boys are as simple as that.

Speaking of which, she was able to defeat that one in the first place, but it was not without this factor (big mistake).

But it's really troublesome now.

Mito glanced at Kushina's cliff-like figure, and was very worried.

If it's a personality problem, then there is still room for change in Kushina.

But if it's a physical problem, then even she has something to do.

Mito even began to think about whether to proceed with Plan B, writing a letter asking Tsunade to return to the village, and then changing Natsuhiko's mission from reviving the Vortex clan to revitalizing the Senju clan......

Of course, this was just Mito's inner complaint, but this thought reminded her of something she had buried in her heart for a long time.

It seems that this shortcoming of Jiu Sinai is not without a way to improve.

But is it really good to do that?

Mito pondered whether or not to teach Kushina that method, and struggled with it.

Her face changed for a moment before her expression became firm.

Then she looked at Jiu Sinai and said gently:

"Kushina, do you remember the Yin Seal I taught you before?"

Kushina is a little unsure, so I don't know why Grandma Mito suddenly said this.

However, hearing the Yin Seal still evoked a memory that she could not look back on.

Because although the Yin Seal is essentially a sealing technique, it actually requires a lot of knowledge in medical ninjutsu.

And Jiu Sinai, who was already exhausted from learning the sealing technique, where did he still have the energy to take another medical ninjutsu?

So in the end, she didn't study for long, but she chose to give up the sealing technique that all girls wanted to learn.

But at that time, Grandma Mito didn't force her.

After all, even Tsunade's sister, who is better at learning than her, has not fully learned this technique until now.

It's just that Tsunade's sister is the opposite, she is very good at medical ninjutsu, but she is not at home when it comes to sealing.

Hearing Grandma Mito mention the Yin Seal, Kushina couldn't help but look at each other with some suspicion.

"Grandma, do you want me to learn the Yin Seal, maintain a youthful appearance like Ling, and then wait for thirty years before launching an offensive against Xia Yan?"

At that time, she did win a lot.

"What's going on in your head?"

Mito angrily flicked Kushina's forehead with his fingers, causing Kushina to burst into tears.

Then Mito stood up, took out an old book from the bookcase in the corner of the study, and then returned to his seat and sat down.

Kushina looked curiously at the book on the table, only to realize that it was actually a photo album.

"Grandma, this is ......"

As she spoke, Kushina couldn't hold back her curiosity and reached for the album......

As a result, the hand was slapped away by Mito with a "snap".

Mito pressed his hand on the album and said to Kushina with a serious face:

"What you see and hear next, you must not mention it to others, not even Xia Yan, are you clear?"

Seeing that Grandma Mito was so serious, Kushina couldn't help but swallow her saliva and nodded a little nervously.

Seeing this, Mito took his hand away and slowly opened the album......

Kushina cautiously took a closer look, and then saw that most of the photos were taken of a cute girl with yellow hair.

And she quickly recognized the other party's identity.

"Ah, is this a picture of Tsunade's sister when she was a child? It's so cute! ”

Jiu Sinai said excitedly, and then he was a little puzzled, "But grandma, what are you doing with these photos for me?" ”

"You'll find out later."

Mito said lightly and continued to flip back.

The photos in the album appear to be arranged in chronological order.

So with Mito's page-turning, Kushina also seemed to witness the growth of Tsunade's sister together.

And in the photo, there are many characters that Kushina has heard or seen appear one after another.

In addition to Grandma Mito, who is always smiling,

There is a sickly face, but he still hugs Tsunade's sister and laughs heartily.

There is a second-generation Hokage grandfather who is not smiling, but in front of Tsunade's sister, he still barely squeezes out a smiling face.

There is a rope tree brother who doesn't see Jiu Sinai much, but is very good to her.

There are even photos of Tsunade's sister taking a commemorative photo with Jiraiya and Orochimaru when they formed a team under Hokage-sama.

It's just that the number of photos has gradually shrunk since then, and most of them are just group photos left during the holidays.

And the number of people around Tsunade's sister is also decreasing, and in the end, only Grandma Mito and Kushina are left.

Thinking that soon, Grandma Mito would also disappear from the group photo in the future, Kushina felt very uncomfortable, and she didn't care about Natsuhiko's affairs for a while.

Mito naturally sensed Kushina's thoughts, gently stroked her red hair, and said gently:

"It doesn't matter, birth, old age, sickness and death are common sense."

"But in the future, I'll have to trouble Kushina for you to take a photo with Tsunade, of course, if you can add Natsuhiko, it will be even better."

Jiu Sinai felt as if she had taken on a heavy responsibility, but in order not to disappoint her grandmother, she nodded heavily and hummed.

So Mito smiled again: "Then in order to let Xia Yan join in the group photo, let's return to the topic." ”

"Jiu Sinai, take a closer look, what's strange about these photos."

Hearing this, Kushina began to carefully review the photos back and forth.

It took a while for her to barely detect one, or two, suspicions.

"...... Grandma, why is Tsunade sister still in the photo taken at the age of twenty, still with a washboard figure? ”

Kushina pointed with a trembling finger at the sister Tsunade in the photo, who was obviously flat-chested, but smiled extraordinarily brightly.

Mito breathed a sigh of relief at this time and said with a smile:

"Jiu Sinai, you finally noticed it, and said in advance, this is Jiu Sinai, you found it yourself, not me told you."

"If Tsunade asks, you can't talk nonsense!"

“……”

Kushina became more and more vigilant when she heard this, and she felt as if she had unknowingly touched a huge secret of Tsunade's sister.

The subconscious told her that she should close the album right away and turn away.

However, the curiosity that has killed countless cats still makes her ask impatiently:

"Grandma, is there a big secret in this?"

Mito still didn't answer directly, but changed the conversation:

"Kushina, you should remember that the Yin Seal can continuously stimulate the activation of the body by controlling the chakra, thereby enhancing the body's resilience and even keeping people young."

Kushina nodded in remembrance.

After all, this is the biggest feature of the Yin Seal, and it is the ability of girls who know this technique to be very greedy.

Then she heard Grandma Mito say meaningfully:

"Then you should also remember that this function of the Yin Seal actually uses a lot of principles of medical ninjutsu, so even if you haven't completed the Yin Seal, as long as you are proficient in medical ninjutsu, you can actually achieve some of the effects."

"It's just that in this way, without the adjustment of the Yin Seal, the proportion of chakra is easy to be unbalanced, resulting in various side effects."

"For example, sometimes there is a situation where some parts of the body develop twice due to excessive chakra injection......

Kushina chewed Mito's grandmother's words several times before she gradually understood the meaning of her words, and her eyes gradually widened.

Then she said in a trembling voice:

"Grandma, you mean...... Tsunade's sister's breasts are her own ......"

"No, I didn't say anything!"

Mito hurriedly interrupted, "I just showed you Tsunade's old photo album and reviewed the principle of the Yin Seal for you." ”

Hearing her grandmother repeatedly emphasize that she didn't tell her, Kushina knew that this matter must be a taboo among taboos for Sister Tsunade.

If she found out about it, the consequences would be unimaginable......

So Jiu Sinai didn't even dare to think deeply about whether the appearance of Sister Tsunade's "side effect" was intentional or unintentional......

However, Jiu Sinai can't take care of this problem for the time being.

She now finally knew why Grandma Mito was talking to her about the Yin Seal and showing her Tsunade's sister's photo album.

I didn't expect the Yin Seal to have this kind of use!

It was a rare idea that Kushina had the idea that the sealing technique was really amazing.

At the same time, she couldn't help but think of what Xia Yan often said: knowledge changes fate.

Yes, as long as she masters the use of the Yin Seal, it is not without a chance to snatch Xia Yan back and change the fate of the two!

Kushina, who had made up her mind, took a deep breath, then looked at Mito with a solemn face, and said word by word:

"Grandma, I want to learn the Yin Seal!"