They both were studying together at the dining room so kei bought a coke so he could drink while studying, so hina drank the coke,

Kei: (his thoughts, that’s my coke,I paid for it ! I didn’t even have any of it how dare you drink my coke 😡)

Hina: ?

Kei: I spit into that, you know. (that will teach you a lesson 😈)

Hina:Urgh,spit it back🤮

Kei:I was clearly joking, dont be so disgusting *disgusted* 😱

Ten minutes later,While studying,Kei unfortunately and accidentally drank the coke in which Hina's spit was.

Kei: while drinking watching hina,

Hina was creeped out😨

Kei: ?

Kei: ( realizing while gulping) *gripping the bottle* I seem to remember something😨😨

That is why Kei never ever drinks coke again when ever he saw the coke he always remembers that unfortunate and tragic incident and then he pukes infinitely.

The other day after school, At super market,

Hina: Oni chan look there are sausages.

Kei: We can only buy one cuz now I only have money for one sausage.

Hina: Alright, we can split it half is that fine with you oni chan ?

Kei: ( acting cool ) I will only have a bite .

Hina: ohh oni chan arigato *blushing*

Hina: Oni chan here have a bite please.

Kei: ( opens his mouth wide big and u know I mean he ate the whole sausage with just one bite ) Thanks a lot I will bring u a lot of sausages tomorrow.

Hina: *enduring and pissed * Fine if u don’t bring me sausages tomorrow I will make sure u regret it Oni chan.

The other day at home ,

Hina: Oni chan where are the sausages?

Kei: Hmm? What sausages?

Hina: *Annoyed and pissed😤*Huh did you forgot about the sausages? So I guess I will tell your girlfriend that you had a crush on a boy u know so she will leave you alone bwahaha 😈

Kei: I beg of you little sister please forgive me I will do anything please don’t tell touka that I had a crush on a boy.

Hina: Ok then give me all of your comics and call your self the ugly pigheaded jerk .

Kei: Ok I will give my comics but why should I call myself that of course I’m the worlds handsome divine hot dude everyone falls in love with me at the first sight and ( blah blah blah blah blah blah blah blah blah 😑)

Hina : Say it or else I will tell ur secret to your girlfriend.

Kei: *unwilling* uh um I’m the ugly pigheaded jerk.Are you satisfied now.

Hina: Yup you ugly pigheaded jerk *grinning*

Kei: ( his pride was crumbled )

*sobbing* H-how could you say that to your Oni chan u meanie (runs away like a cry baby)

Hina: I feel kinda guilty but I should have said that I dont care.

30 minutes later

Hina: *Worried*

He has been crying with all his might so she was worried because the neighbours might hear him Hina wasn’t worried about oni chan at all .