Byakugan. Sharingan. Rinnegan.
Those are the names of overpowered Doujutsus known to Shinobi as the Big Three. However powerful they seemed; they are just a tool to be used. A master doesn't need to rely on their tools, but a fool would make the mistake to use them as a crutch.
If possessing the Big Three isn't enough to promise a certain victory, possessing lesser-known Doujutsus such as the Jagan, Ketsuryugan, and Shenanigan doesn't make you more exceptional than most Blood Limit users.
Exceptional or not, there are no reasons to not celebrate its awakening. Unless you're a loyal Kiri Shinobi. A good loyal Kiri Shinobi with a Blood Limit is a dead one.
"Look, Neko-Chan! I have the Sarutobi's Secret Doujutsu now!"
Kaina's overenthusiastic yelling roused the landlady from her nap. She briefly wondered why the girl called her Neko-Chan until she dismissed it as one of the girl's eccentricities. Unaware of the cat-eared headband placed on her head.
"The Sarutobi... What now?"
"The Sarutobi's Secret Doujutsu! The one they get after smoking!"
True to Kaina's words, the white part of her left eye is now tinted red instead of its usual colour. She had seen this happen to a Sarutobi Jounin before. Said Jounin then suddenly become capable of seeing, hearing, and smelling things other people can't.
The landlady incredulously stared at her and let out a long sigh. There are currently only two Sarutobi in the village who smoked. There used to be three, but Asuma still guarded the Fire's Daimyo to this day. She doubted the Hokage to be the irresponsible one who get caught smoking illicit blend while on duty... Which leaves...
"Nisuke Sarutobi? You shouldn't be talking to him. He is a bad influence."
No one shouldn't be talking to him at all. No one, except people who practised constant vigilance. Blink at your own risk. It would take less than one second for the Daimyo Killer to stop laughing at your jokes and start laughing at your corpses instead.
One brother worked as a Daimyou's bodyguard, while the other brother worked as a Daimyou's bogeyman. Talk about ironic.
"We don't get to talk. He body-flickered away when he sees me seeing him. I wonder why."
"That's because he isn't supposed to be seen by the living," without his ANBU mask, at least. Not Monkey, too obvious.
Now, what to do about one of Kaina's eyes? Fortunately, the redness around the sclera isn't caused by recreational drugs usage. Simple irritation like this could easily be treated with few eye drops. It would likely take less than a week to return to normal.
However, if the injury is from an impact or a blow to the eye, the infection that may have been present could have spread to other parts of the eye. This could have led to a lot of complications. The good news is that these kinds of injuries don't happen often, and with good treatment, most of them are quick to heal.
"Stay still. You don't want to go blind, do you?"
"Doujutsus can do that?"
Kaina followed the landlady's instructions by not moving at all until the treatment finished. She doesn't blink, she doesn't breathe. Time seemed to freeze as her caretaker/landlady applied her medicine.
"Every power comes with a price. So, how was your exam?"
"No problems, how was yours?"
When it comes to deflecting questions, using another question is the best choice. Think of it like deflecting a shuriken. Or better, a fireball. Fight fire with fire they said. It doesn't matter that the landlady's Academy graduation exam took place decades ago.
If Kaina did her math right, this person should be as old as the Sannin. But math is only for losers, everyone knows a talented Kunoichi doesn't age past twenty.
"Someone died. Everyone passed."
"Are we talking about the same exam?"
"What makes you think we aren't?"
Before the end of the Second Shinobi World War, if someone dies during an exam, all the other students present pass. If the Academy burns down or is destroyed otherwise, all current students immediately graduate with a Konoha's headband.
No one told her that before, although maybe that is because she didn't bother to ask. Should the rule still be in effect, some smarter students would probably stab the person closest to them because it's easier than answering complicated questions with no real-life applications.
What kind of Shinobi use math to calculate the trajectory of a kunai?
Suddenly, Kiri's sadistic Shinobi doesn't sound so insane.