Time goes back to the previous day.
Near evening—
In one of Konoha's experimental bases, inside a private office.
Tsunade was sitting in her office chair, looking over the latest research report she had just brought back from the lab.
After making a full round of losses at all the major casinos in the Land of Fire, and losing all the pocket money Shizune had given her, she had no choice but to come back and keep working.
Of course, that wasn't the main reason.
She was now the Hokage of Konoha, and also the teacher of the Daimyo of the Land of Fire.
If she really lacked pocket money, she just had to agree every night to learn a little "new knowledge" from a certain brat, and getting money would be easy.
The main reason was that this experiment was indeed very important.
Some time ago, Aoba had persuaded the leader of the Akatsuki organization to temporarily transplant his eyes into Hidan's body to conduct an experiment to revive the dead.
The dead had indeed been revived, and Hidan was still alive as well.
After losing most of his life force, a rather mysterious power had locked in the last trace of his vitality.
Tsunade had come back specifically to study this power.
And at the same time, earn a bit of future gambling capital.
Knock! Knock! Knock!
"Come in."
Hearing the knock and sensing a familiar presence, Tsunade quickly realized who it was.
"Rare sight, Sensei. You're actually wearing a lab coat during the day?"
After Aoba walked in and saw what Tsunade was wearing, his eyes lit up.
"What, is it strange for me to wear a lab coat?"
Sitting in the office chair, Tsunade raised an eyebrow slightly. Her gaze shifted from the research report in her hand to Aoba.
"No, it's just the first time I've seen you wear this during the day."
"Stop being improper. I just came out of the lab, of course I'm wearing a lab coat."
Tsunade shot him a glare. There was no way she couldn't hear the meaning behind his words.
But that glare only made Aoba feel even more excited.
"Wait! It's almost quitting time. Don't you dare mess around in here today!"
Tsunade quickly noticed the heat in the boy's eyes.
She naturally knew what it meant when he looked at her like that.
Every time at home when he saw her wearing those strange outfits, he would show the same look.
And the next second, she would… But she had worn a lab coat at home before. Did he really need to be this excited?
"Mess around with what? I just think you look beautiful in this outfit. I'm simply appreciating it."
Aoba smiled and walked up to Tsunade.
Before she could react, he directly lifted her up from the chair. After sitting down himself, he placed her on his lap.
"Mm, this angle is much more convenient for appreciating."
Sitting face to face like this, everything inside the open collar of the lab coat was completely on display for him.
Underneath, she was still wearing that sleeveless top.
Even with the support of the clothes, because of his movement, the fullness hidden beneath the lab coat seemed like it couldn't wait to jump out.
It almost hit him straight in the face.
"..."
Tsunade looked speechless, but her hands had already habitually rested on his shoulders.
Without even forming hand seals, Water Release: Great Exploding Water Wave was already prepared.
It had basically become muscle memory.
"I told you, it's almost time to get off work…"
"Sensei, before I came here just now, I think I got injured. Can you take a look for me?", Aoba directly cut her off.
"You? Injured?", Tsunade clearly didn't believe this brat's nonsense.
With his current physique, even if someone stabbed a kunai into him, before she could even use medical ninjutsu, the wound would probably heal on its own.
"Mm, really. And it's a serious injury."
Aoba nodded seriously.
"..."
Tsunade looked suspicious. She didn't know what trick he was playing this time.
But she still used medical ninjutsu to examine his body.
After a careful check, Tsunade directly pinched Aoba's face.
"So there's no wound on your body and no internal injury. Where exactly are you hurt, you brat?"
"This kind of injury can't be detected with medical ninjutsu. You have to use your hand."
One of Aoba's hands supported her waist, while the other grabbed her wrist.
"With my hand?"
Tsunade was even more confused.
"Where exactly is—"
Before she could finish speaking, guided by him, she had already found it.
Medical ninjutsu really couldn't detect it.
"Heh, that is quite a serious injury."
Tsunade moved her fingers slightly.
The constantly rising temperature was almost comparable to Fire Release.
"Sensei, the injury is getting worse now. Only you can heal me."
Aoba said with a serious face.
"Honestly…"
Tsunade could only glare at this "pitiful" brat who seemed to be acting spoiled.
"Didn't I just say it's almost quitting time? Can't we go home? Do we really have to do this in the office?"
Although she said that, her body had already softened.
After all, she couldn't refuse this brat.
"It really won't work to go back right now."
However, after hearing Tsunade's words, Aoba said something inexplicable.
"Hm? What do you mean?"
Tsunade didn't quite understand, but soon she had no time to think about it.
———
Night fell.
Tsunade took out a brand-new set of clothes from the office wardrobe and started changing.
The wardrobe didn't just have clothes. It even had shorts and other personal undergarments for changing.
It was obvious she had long been prepared.
After all, it wasn't the first time. It was just that usually Aoba would come during the noon break.
In the afternoon, he usually came to pick her up after work.
Like today, being so impatient before quitting time, this was a first.
And… Tsunade glanced at the night outside the window, then walked up to Aoba and pinched his cheek in mock annoyance.
"Why didn't you use that time-controlling ninjutsu of yours? It's already dark. Are you trying to starve me?"
Aoba looked innocent, "Because today I was ordered to delay you from going home."
"Hm?"
Tsunade paused slightly, then looked at him suspiciously, "You all didn't go overboard at home and tear the place apart, did you?"
"..."
Now it was Aoba's turn to roll his eyes.
No matter how overboard they got, they wouldn't tear the house apart, okay?
"Sensei, you'll know once you come back with me."
Seeing that Tsunade had changed, Aoba simply grabbed her wrist and used Flying Thunder God to return home.
But when they arrived, the living room was completely dark.
Soon, however, faint lights began to flicker.
Then—
Bang!
"Happy Birthday, Lady Tsunade (Big Sister)!"
The sound of party poppers, along with streamers and the congratulations of many young girls and older sisters, burst into the air, then slowly fell around the two of them.
In an instant, all the lights in the dim room were switched on.
"Birthday?"
Tsunade stared blankly at the big cake that Shizune and the others were pushing over.
After a brief moment of surprise, her expression couldn't help but turn a little complicated.
'Time really flies…'
She had been so busy with research lately that she had forgotten this day.
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