While Uchiha Itachi and the others were taking the entrance test at the ninja school, Tsunade had already followed Mitarai Red Bean, who had been waiting outside her room early, to a shop that had just opened.

Looking at the signboard with the big characters "Curse Seal Customization" written openly on the shop, and the long queue that had already formed in front of the shop, Tsunade couldn't help but shake his head, and sincerely sighed that he couldn't keep up with this violent era:

"That's a ...... If you don't come to the fog, you can't imagine the picture in your life. ”

"That's not true, if the overall situation of the ninja world doesn't change much, you should be able to see the signboard of our chain store in the Fire Country and Konoha Village within five years."

Listening to Mitarai Azuki's confident answer, Tsunade rolled his eyes at her speechlessly, and said angrily:

"Are you a fool for me? Here in the Fog Hidden and Water Country, with the help of your four generations of Mizukage, even if everyone doesn't know what kind of medicine you sell in your gourd, at least they won't think that you will deliberately seek money and kill people...... If you leave the Land of Water, do you think that people in other countries will be so easy to accept your unknown origin and suspicious use-"

"Ahhh

A somewhat high-pitched female voice interrupted Tsunade's speech, and she turned her head to see a richly dressed noblewoman with a plump and somewhat bloated figure trotting towards Mitarai Azuki and her with a surprised face, cheering in her penetrating voice as she ran:

"Did you come to draw the spell seal for us today?"

"Well, it just so happened that I didn't open the store yesterday because I was going to greet customers, so today I should compensate for the loss of your waiting."

"Ahh......h

"Well, I'll try my best to tailor the type of spell mark and the order of drawing for each guest according to their physical condition, please don't be too anxious, let me go in and prepare first, okay?"

"Ahh......h

Mitarai Azuki gave the chubby lady a response that could soothe her emotions, and then pulled Tsunade, who was frowning, through the crowd of people gathered like a snake dressed in smooth scales, and walked into the store that was still preparing, and seeing the arrival of Mitarai Red Beans, several shinobi who were full of worry in the store lit up and cheered:

"Oh oh, it's Amazuma-sama! Great, so we don't have to close today! ”

"Okay, okay, hurry up and prepare the materials needed to draw the spell seal, you've all been interning here for a week, why are you still thinking about me alone?"

After driving the gathered apprentices to do what they had to do, Mitarai Azuki tidied up her outfit and brought a chair for Tsunade to sit down, and said apologetically:

"I'm sorry, Tsunade-sama, it seems that there are a lot of guests today, and I may have to be busy until around noon before I can relax to tell you more about our commercial model of spell seal customization......"

"Don't care about me so much, I'll just watch from the sidelines."

"If you don't mind."

And so, a busy morning began.

As the chief technician of the mantra seal customization, Mitarai Azuki was naturally busy in front of the endless stream of customers, and Tsunade was able to roughly figure out how the store was doing business by walking around the shop and chatting with some female customers who had received the spell mark drawings.

First of all, there is a rich variety of well-graded spell seals, which provide a core business direction for the store - slimming, shaping, and weight loss, and then after the customers explain the service they want to receive, the assistants in the store who have been trained in medical ninjutsu will inspect their physical condition, and according to the results of the investigation, a detailed order of drawing spell marks will be drawn for Mite-washed, and then she and the only two middle ninja will complete the drawing of specific spell marks.

After completing the drawing of the spell mark with a certain amount of natural energy condensed with paint, Mitarai Azuki and the two shinobi will inject their own chakra into the spell mark they have drawn, activate the spell mark, and stimulate the effect of constantly consuming chakra, and then through this consumption of different intensities, it will have the effect of "losing weight", which is actually "consuming" life.

But what makes Tsunade feel a little incomprehensible is that while these spell marks consume the host's chakra and life force, they will also consume the chakra injected into Mitarai Red Bean and the two middle ninjas, and from her understanding of ninjutsu, as long as the chakra injected into the spell mark is consumed, the entire spell mark will stop working.

This seems strange.

After thinking about it again and again to no avail, Tsunade decided to ask Mitarai Azuki Bean, who was in charge of the project, directly, and when Mitarai Azuki listened to Tsunade's question, her puzzled expression really made Tsunade feel even more puzzled.

"Why do you think...... We're doing a one-off business, Tsunade-sama, isn't it? ”

"Not a one-time business? But that kind of special paint that condenses the energy of nature seems to penetrate directly into the human tissue, right? This means that once it's drawn, it will always be in the host's body, won't it? Tsunade frowned, stared straight at Mitarai Red Bean, and asked.

"It's true that the spell sigil will last forever, but as long as the corresponding chakra is not injected, it will not be activated again, and it will no longer fulfill its assigned mission," Mitarai Azuki shrugged, still incomprehensible, and asked rhetorically, "Since you have already seen this, why do you think that we are doing a one-off business?" ”

“…… Wait a minute, you mean, you're going to charge them another fee for recharging the spell sigil, right!? ”

Faced with Tsunade's sudden awakening, Mitarai Red Bean nodded naturally, and said proudly:

"Isn't it a matter of course to entrust us to solve a problem one time at a time, and then to send us another commission and pay us if the problem comes back?"

"But, but the amount you charge for drawing the spell is exaggerated, isn't it?"

Tsunade looked at the high-grade spell mark combination that required up to a million taels to buy on the charging list, and couldn't help but gasp for the ruthlessness of the fog hide.

"It doesn't matter, some nobles who want to keep in shape are willing to pay for this kind of weight loss and body shaping that does not require any exercise and taboos, if you can add a rejuvenation effect to this package, even if the price doubles several times, they will still flock to it~"

As he spoke, Mitarai Red Bean held the slender jade hand of Tsunade, whose face had changed drastically, with great enthusiasm, and said very seriously:

"Tsunade-sama, if you seize this opportunity to invest in the Mystic Yin Sealing Technique, you can lie down and become the number one rich woman in the ninja world. As the creator of the Yin Seal, you should be the one who knows best how important a youthful appearance is to women and even men who are getting older, right? ”

"With this technology, maybe even the daimyo of the Land Country and the Land of Thunder will be tempted to fall to our side."