Under the sakura tree [Obanai Iguro x Female reader]

Lessons

-Well, ok.
Said my grandma, and we went on a long walk.
I was exhausted and I was panting like crazy. I caught up to her, saying:
-How much longer?
-Only a tiny bit
-Mhm. A tiny bit is some 7 blocks to you?
-Precisely!
-Ugh!

We went some good seven blocks, and got to the destination. It was a white, medium house, with a branch roof.

-We're here!
My grandma said it, like a legend would live there...
-No grandma. I want to learn by your techniques.
-Oh. I thought you want to learn the water element. So if you become a hashira, you want to be the spider hashira, yes?
-Absolutely!

*********
A year later, I was still training, and got a good hang at it, until my grandma wanted me to slash a boulder.
-But grandma, that's impossible!
-It's possible, Y/N L/N! You have to try at least.

I stood there in concentration and bravery. I was looking for the precise point. I rushed against the boulder and...

I saw darkness engulfing my vision.
I could barely hear my grandma saying:
-You can't achieve everything on your first try, dear.

I woke up, and I see my grandma talking with a man, known as Sakonji Urokodaki, in the house.

I got up focused again, and was thinking of a strategy. I was trying different strategies, but I thought of one, and tried it the next day.

I stood in front of the boulder and I saw it. I saw the opening thread. I ran to the boulder again, swinged the nichirin sword and...

It broke in half. I did it. 

                           ***************

Long story after (Y/N is 16), I am now in the final selection, fighting a mutant demon. It's very huge and strong. I have 1 broken rib and my hands are actively sweating and bleeding. But then... I see the thread. I run away from the demon, jump up a tree, and I feel like I am flying towards the demon and I am slashing his arms off, but they regenerate very quickly. I continue to slash the arms, but I got a smarter strategy:

Total concentration, spider breathing, 4 form. Mizugumo hallucination!

The demon was seeing, harmless to it, spiders, and wanted to crush them, so I swinged my sword, and slashed it's head off.

I passed the final selection.