September 27th, Tuesday. Cloudy.

  It’s been nearly a week since I arrived in this world, and I’ve adjusted surprisingly quickly—almost completely integrated into it.

  The coagunt spray and medical bandages are already on sale at major ninja tool shops in Konoha. I’m seeing those small cans of spray tucked into the leg pouches of practically every shinobi now.

  Switching from rge bottles to portable ones was a smart move, and the bandages have been better sealed too. Gotta say, Konoha's efficiency is impressive.

  Over the past two days, I’ve already seen several ninjas using the coagunt spray during treatment. The feedback’s been solid—“stings a little when applied,” “excellent hemostatic effect,” “feels reassuring to carry around—minor cuts and scrapes used to be a real issue on missions.”

  That made me genuinely happy. Nothing’s more satisfying than seeing patients pleased with their treatment.

  I’ve submitted the report requesting a medical research b. Not sure if they’ll approve it, but with the widespread success of the coagunt spray, the chances are pretty decent.

  If it goes through, the next step will be experimenting with synthetic skin and organ cloning. If that works, ninjas missing limbs or other parts might be restored—and it could also help disfigured veterans hide their scars.

  That is, if they even want to. Many older shinobi wear their scars like badges of honor—perhaps a sign of how war has shaped their minds.

  Lately, I’ve taken an interest in ninjutsu. Sealing jutsu in particur—being able to seal both living and non-living things into scrolls? That’s wild. It’s practically subspace storage technology!

  Even better, the scrolls operate in a different time flow, keeping items fresh. If living bodies could be stored that way, then even patients on the brink of death could be transported to better medical conditions. With my skills, even if someone lost an organ—bleeding internally or even heart failure—I’m confident I could bring them back within a minute of clinical death.

  If only I knew how to use that kind of ninjutsu. Motivated by that thought, I began reviewing the original body's ninjutsu training materials. It’s such a convenient power—it might just come in handy.

  Also, I’ve discovered my chakra nature.

  It’s Lightning.

  ——————————————

  Konoha Hospital.

  After wrapping the st yer of bandage, Takagi Naohito gently patted Might Guy’s right leg. “All done.”

  “Oh!” Even with an injured leg, Guy stood tall with unrelenting energy and gave his right foot a couple of test stomps.

  “Hey, it doesn’t hurt at all!”

  “That’s just your brain tricking you.” Watching the boy start hopping up and down, Takagi Naohito sighed and asked, “Your right leg had a pretty bad abrasion, even started festering a bit. You’re only ten, not even a genin yet. What the hell did you do to end up like that?”

  “Kicking logs.”

  “Kicking—” Takagi couldn’t even begin to comprehend how this mushroom-haired, thick-browed boy managed to injure himself like that. “You didn’t wear shin guards while kicking logs?”

  How many times did he even kick it? Did he hold some kind of grudge against that log?

  “Nope!” Guy gave a big thumbs-up and decred, “A man’s youth doesn’t need protective gear! Sweat and hard work are all we need!”

  “Sigh…”

  That boundless energy of his… Takagi Naohito had no idea how to deal with this kind of kid.

  “But a real man shouldn’t let himself get hurt so easily either. Next time, wear your shin guards. And before you go into intense training, drink some saline to replenish electrolytes. Losing too much salt through sweat can actually knock a guy out.”

  “Really?” Guy looked enlightened, clenching his fist and punching his open palm. “No wonder I kept passing out during training! Thank you, Doctor!”

  “...”

  Takagi didn’t even know where to start. Across two lifetimes, he’d lived more than a hundred years, but this… Should he be shocked by Guy’s ck of basic knowledge, or by the fact that he trained himself unconscious on the regur?

  No, best not to say anything. With this kid’s personality, he’d probably shout something like “That’s youth for you!”

  “Well, keep it up. Show me the results of your manly perseverance, Guy.”

  Takagi forced a smile that vaguely resembled Guy’s trademark grin. “It’s a promise between men!”

  “YEAHHH!!”

  Guy dashed out of the hospital bursting with energy. Takagi let out a long sigh. Being full of life is good, sure—but that much? It’s exhausting just watching.

  Thankfully, Takagi had been a pediatrician in his previous life. Without that experience, dealing with kids like this would be a nightmare.

  “Next.”

  The patient after Guy had snow-white hair—clearly natural, judging by the color and shine—and it stuck straight up. Takagi was actually a little curious what brand of hair gel he used. The guy looked to be somewhere between twenty and thirty, though the hair made it hard to tell for sure. And Takagi recognized him.

  “Jiraiya? You again?” One hand on his hip, Takagi sighed. “You’re injured again?”

  “Sorry to trouble you, Dr. Takagi,” Jiraiya said with a hiss of pain as he gingerly lowered himself onto the chair. “My chest hurts like hell—can you take a look?”

  “Fine, lift up your shirt.”

  Takagi had vivid memories of this guy from the original body's past. Jiraiya: disciple of the Third Hokage Sarutobi Hiruzen, elite jonin of Konoha—and an incorrigible pervert.

  Yeah, that’s what stuck out most to Takagi: the pervert part. Jiraiya had a notorious habit of peeping at women in the hot springs, and had taken more than a few beatings for it.

  “...” Takagi’s hand froze as soon as he saw the dent in Jiraiya’s chest.

  “Nurse,” he called calmly, lowering Jiraiya’s shirt again, “get the OR prepped. Mr. Jiraiya needs surgery.”

  “Eh? Isn’t that a bit much?” Jiraiya started sweating. “Back then, just a little medicinal salve did the trick!”

  “That was when it was just surface-level bruising. But this…” Takagi lightly tapped Jiraiya’s chest with his index finger. Instantly, Jiraiya doubled over in pain.

  “Ow ow ow! Okay, okay, stop poking it!”

  “Conservative estimate—you’ve got two fractured ribs. Lucky they didn’t puncture your organs. Surgery is necessary to realign them. Mind telling me what enormous beast rammed into you, Jiraiya?”

  A certain image of a furious blonde woman fshed through Jiraiya’s mind. He nodded slightly. “You could say that. A terrifying beast, indeed.”

  “Thought so.” Takagi jotted notes on the medical chart. “You’ll need to stay hospitalized for a while after surgery.”

  “Ugh, more hospital time…” Jiraiya