______________Muzan POV________________

Konato : you should move around

I nod : Hai ! *Yes!*

I move my fingers and hold my hand, then i try to more my arm , it very fast ! I am supried that i could react my right arm could move such a fast speed ! Is this the effects of blue spider lily ?
Then I sit up and start moving around the room.

All of a sudden, my body's movements were very smooth, a feeling that I have never experienced before ! not even in my previous life.

I heard Kotano say: Oh, looks like this experimental medicine that i made is worked I'm supried that this medicine makes you healthy and strong !!
He smiled: congrats ! you are cured from that disease !

am i cured? Am I really cured?! I can't believe that ! my body is healed! Not only that , I walk more easily than in my previous life !

In previous life , I'm a pretty fast runner , about 100 m / 11,2 second and my body moves very well . But ,this ... this body ... Is ... light... so much, I didn't know if I used this body to run, I think it would surpass my previous record about running. It is ... Amazing !

it's all thanks to this doctor that the body was healed and received such a good gift ! That was was such a good gift but I was worried that this body might turn to dust if i touch sunlight like in the anime and manga ?.

So...I need to find out . But ... first I need to thank the doctor because he cured me and helped me out of that nightmare.

I held his hand and say with a cheerful voice : thank you, thank you for saving me from that nightmare, one day I will help you and repay for you.

He complimented: "nothing , you really have great patience! Even though you've been like this for 2 years, you still can endure it! With others, they will have a boring mindset and want to be self-sufficient! death, when sick like you... I'm really sad for them"

Don't tell me ! These are more guys like me ?!

He even clapped his hands and said: "And you, you are really a special person and have endured well during the 1 week that I find a way to treat and cure you!"

I smile shyly: hehehe.. it's no big deal, doc :))

Also I'm better because of you, and someday... I'll help you

Suddenly, he said in a serious tone: However, I need to be aware that the medicine which cured you can have side effects because this is an experimental medicine so we will be here a little longer to see your situation, so you you can free to do whatever you want .

I nodded: "yes" ( So I'm not completely cured yet)

In this world, I doubt I'm the only human and the only demon will die from the sun at this time. Well! I'm not surprised at all.

Yes ! I need to show him the side effects that make my arm turn to dust... But does the demon like fell the hurt? Please try!
lucky ! there's a window here ! I need to put my arm in the window, I turn my head , the doctor is still looking at me while he's packing, so I'm going to put my hand out the window and...

"Anghhhhhhhhhhhhhhhhhh!"

I withdraw my hand , it so Hurt! it f*cking hurt ! my arm is burning and turned into ash !!! holy Sh*t ! He saw , looked surprised and worried : " what happened ? Your arm !"

" Don't worry ! it nothing . But doctor.. i khew the side effects that you made in last medicine . It very , very hurt !"

Goddamnit sun light! You took my hand and turned it into dust ! But , can my arm regenerate this time ?like kny ? I put all my thoughts for regrow my arm, I hope it can do it ... After thinking for a while, I heard the sound of fresh are growing back .Then I have my hands like new , I-it worked ! It finally worked !

Amazing ! this is how regeneration work ! my hand is regrow as new and he looking supried that my fingers of my hand grow back !

He was surprised : H-how

I laughed and said : Doc ! Your medicine that you did is unbelievable ! Not only does it help me get healthy again, it can also give me the ability to recover. But, it has its own downside... every time my body touches the sun, it burns my body ( it could reduce my arm into f*cking dust !)
________________3rd POV__________________

Konato thought for a moment and said that : If you stay in this state, how will you be able to move out?

Hearing that voice, Muzan thought for a moment and said: this is a difficult question ...

After thinking for a while, Muzan found a solution, but only temporarily

Muzan : ( and there are 2 ways to walk in the sun :
- The first way is to bring an umbrella, this is like how it work when the sky going to rain, it is very effective, but unfortunately it is not very durable,a strong winds will blow its head , and i couldn't move fast when use this umbella T-T.
- Second way is more effective : full cover wear , this way is more effective than umbrella , only one drawback is it will be hot as F*ck when wear too f*cling long , I think it doesn't affect me much.
But... Why didn't should use both ways , that would be good idea ! It would be safer !

But the difficult thing still the umbrella !how do I make the umbrella durable when I move fast? i will tell him these two idea first !)

Muzan: Doctor !

Konato: Did you find the idea?

Muzan: Yes! Why should we hold an umbrella and wear a full cover of clothes?

Konato : i thought same as you ... but that a good idea

Muzan thought and laughs: hehehe ,good idea isn't it ? (Just ... Just how smart he is ?) . But... Doctor I have a question, although it's very difficult , but I can't avoid it ..

Konato with a suspicious face : just say it !

Muzan said in a hesitant voice : can I... be your ... student ?

Konato started thinking a while then started laughing :

( His laugh must like this
and This is musashi in Baki dou manga)
"Ha... Ha... Ha...hahahahhahaahahaha , you are very interesting one , Kid ! I admit you about it, this is the first time for Someone wants to be my student!

He then said :So what do you want to be my student for?

To repay the doctor and survive on the sun, there is no other choice .

Muzan : i want to be your student ... to treat the weaknesses and side effects of medicine that it causes, and I want to follow you and help more people like you.

Konato thought again and finally made a decision and said: okay! I will accept you as my student and from today I will give you 1 month to prepare. After that 1 month, I will pick you up and start teaching you, prepare yourself! Your family is waiting !

Muzan: Yes! ( holy sh*t ! finally ! he will teach me ! i better prepare in one mouth >_<)

Kotano: now you are not sick anymore and only harms you is the sun . So...i plan to go to do some other work . In a month, I will come to your house. Be careful and don't be burned by the sun!

Muzan : Good luck for your journey !! Konato-san !

*Breath of the time , first form : 69 minutes later *...

after Kotano left, and Muzan met his family after he recovered from his illness, he told the story how the doctor saved him . Then Muzan thought and held his hand: (it seems i need to train in this new body, right? i have a month to train this body and improve this body soon ! * Your determination has rised*
And Doctor ! One day we will meet again . At that moment , i will protect you no matter how much it cost) !
___________________________________________
Fact in this Au: After Muzan being cured , he feels so grateful that he wants to become konato's student for : to survive under the sun by research the secret of blue spider lily and wants to protect him from any dangerous that waiting to Konato .
Muzan will start training and adapt to this era in one month to improve his demon body and stronger.

Another fact in this Au : Demons (Japanese Onis) taste buds will be different from normal humans, the food that humans-made will be difficult to digest and convert to energy, Blood and flesh is the only food the demon can eat, if demon eat a lot of flesh and blood , they will becomes stronger, not only that, there are many ways for the demon to become stronger.
*fun fact*: if i was a demon of Muzan in kny universe , i will speedrun it !"

Canon Muzan read this story be like : * Crying in the corner * Why did you make this story , just to make fun of me :((

Me : this is just for fun , buddy !

Canon Muzan *load shotgun and aim the story maker* hee hee , you motherf*cker !!!

Me : * insert mokey scream* AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA

* The chase *

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Write :May 1
Finished :May 5
Published: May 5