Kotonoha is owned by Overflow

Author p.o.v
You are a y/n katsura a little brother towards to kotonoha katsura . You are different than her as you are kind,caring and determine person that you like to help people in any kind of solution even so that you have a crush on your older sister for long time that you don't know whether to confess her or even knowing that she have someone that she likes. Even so that you don't know she also have a crush on you too.

You are walking out of your school that you felt a bit tired from the study but that never keep you down

Y/n: ahh i am a bit tired but i that doens't mean my spirit go down that easily i better get home before onee chan is upset if i am home late or even mad at me.

You walk towards your home as fast as you can that.

You almost arriving at your home that you suddenly see that your older sister is talking to a boy

Y/n: hm? Who is that i never see that boy before is he a friend of onee chan?

She talks more to the boy even closer that you stared to be a bit nervous

Y/n: w-what if that person is onee chan boyfriend? N-no it couldn't be i mean she would have told me that she is dating someone right?...mm i have to ask her if she have a boyfriend.

You see that boy walk away and you slowly head towards to your home and surprise to see your older sister at the door

Y/n: onee chan!

Kotonoha: y/n kun

You stop in front of her as you look at her and she looks at you

Y/n: am i late arriving at home?

Kotonoha: no if you did i will a bit upset

Y/n: but at least i am arriving.

Kotonoha: fine come in ok

You nodded and walk inside while your older sister smile and thinks of you

Kotonoha mind: otouto ..mmm your so cute i could just hug you and tell you how i feel about you..mm but time must be right so i can tell you..

Timeline skip
Kotonoha finish with her school that she is walking back towards home alone while smiling

Kotonoha: mmm i just have to think more of what i am going to do with otouto he he i can't wait

She keeps walking even more that she heard some voices coming nearby that one of the voices she recognize it is yours

Kotonoha: is that y/n kun? Mmm i wonder i can give him a surprise he he

Kotonoha peeks to see you until she felt a bit surprise and shocked that you talking to some girls from your school

Kotonoha: n-n-nani?..n-nani? O-o-o-otouto..y-you have a girlfriend? Not just one b-but two?..no no not my otouto he is....never like this....no no he is different..i just know it..

Kotonoha started to follow you and the girls that her other side started to grow

Kotonoha: impossible for otouto to have those girls.....then my feelings are useless....no....i do know he is never like that i just know it..

Then she stops and look that it arrived at their house as she slowly makes a bit jealous and anger yandere look

Kotonoha: .......i am just going to calm myself..just have to wait....

The girls waved at you while heading inside as kotonoha just stay quiet and head to the house without making any conversations.

Timeline skip
As is the weekend that you sit on the bed while doing some homework

Y/n: mmm what's wrong with onee chan..she have been a bit quiet lately to me...

You couldn't do your homework as you still thinking of kotonoha.

until a knock on your door as you look at the door and seeing kotonoha

Y/n: o-onee chan?

Kotonoha: hello there otouto. Um are you doing your homework?

Y/n:y-yes

Kotonoha: i see. Um may i ask you something?

Y/n: s-sure

Kotonoha sits on the bed while looking at you with a bit blank stare

Kotonoha: can i ask you who were those girls that you talking to?

Y/n: those girls?

Kotonoha: yes..

Y/n: well those are just school friends..

Kotonoha: oh really?

Y/n: yes onee chan...besides even if they trying tk flirt towards me i ignore them...because they aren't for me...

Kotonoha eyes widden a bit as she sighs of relief knowing that you did'nt betray her

Kotonoha: o-oh i see..

Y/n: mmm besides the one i really love is caring and protective to me ever since i was a kid

Kotonoha blushes even more that you said

Kotonoha: o-o-otouto are you saying..

Y/n: i-i-i love you onee chan!

You blush and hide your face that she hugs you and have tears of joy

Kotonoha: i-i am sorry for asking you that question i just thought you have a girlfriend...and i thought you don't love me

Y/n: i do onee chan

Kotonoha: i am happy because i love you too otouto more than a brother

She kisses you on the lips as you blushes and kisses her back on the lips passionately as both of them moans into the kiss.

They both slowly went apart as leaving a trail of saliva and look at each other.

Y/n: onee chan

Kotonoha: otouto

Y/n: i love you

Kotonoha: i love you too

Y/n: mm onee chan who was that boy you talk to? You know like few days ago

Kotonoha: oh his just a friend and don't worry i only have feelings for you

Y/n: oh sorry i did't know

Kotonoha: its ok otouto come here i want to kiss you again

You nodded and kiss her again . That you know having your older sister as lover makes you feel happy for life.

Author note
Hey waddup guys its me here i hope you all enjoy this chapter more than i do and also this request is from Brave_Vesperia go check him out so yeah i think that's it for today and i will see you guys later peace out.