(8 years old)
Kuroko likes Akashi-kun. He plays with her. He comes to her class during breaks and they have snack/ lunch together. They always play together outside school too. If one of them has private lesson, the other will watch and wait (or join in if the teacher is nice), and then they'll play again (or take a nap together, that's nice too). Akashi-kun always says that he won't let her feel lonely because she is his feeonse. She doesn't know what feeonse is (maybe, like, friend?) but she doesn't care. Kuroko likes Akashi-kun because school is less boring now.
He's a little bossy though.
(11 years old)
Kuroko hates Akashi-kun. Who does he think he is telling her she can't play with Ogiwara-kun? She reaaally doesn't get him. Even though she tells him Ogiwara-kun is nice and fun and the three of them can play together. But no! He has to get all bossy and angry (so immature) whenever she tells him she wants to play basketball with Ogiwara-kun.
But then she'll like him again because he'll always give in (after she silently glares at him and glares some more) and joins in (or just sits on the bench and glares).
(12 years old)
Kuroko likes Akashi-kun. Maybe a little less (sometimes). He keeps telling her to study, study, study. They have to get into Teikou junior high, he says. Well, he has to get into Teikou (she doesn't) and says he absolutely wants her to come with him (and then she'll like him a teeny tiny more). So she's forced to study all the time.
Hmph. She's not stupid. She doesn't need all that studying!
She likes him a little less (sometimes) but she'll like him a little more again when he pouts and sulks when she tries to avoid him using her weak presence. Akashi-kun is cute like that.
She won't tell him that though. He'll get mad (she knows, she called him cute when he accidentally squirted mandarin juice into his eye).
(13 years old)
They join Teikou's boys (Akashi-kun managed to convince Nakajima-senpai and the coach of Kuroko's value to the team) basketball club and they have more friends (weirdoes) now. Akashi-kun seems wary of Aomine-kun and Momoi-san though. Something about them looking at Kuroko with dirty eyes. He confuses her sometimes. But she doesn't care. Kuroko likes Akashi-kun a lot for making school even more interesting and enjoyable.
...Or not. The training menu they give her is pure torture. It's compulsory if she is to stay in the boys club, they say. Lucky for Akashi-kun, he buys her vanilla shake after club. Energy replenishment for his feeonse, he says.
`v'
To: Ogiwara-kun
What's a feeonse?
`v'
From: Ogiwara-kun
Feeonse? What's that?
`v'
To: Ogiwara-kun
I wouldn't have asked you if I knew, Ogiwara-kun...
Akashi-kun keeps calling me his feeonse.
Is it another word for friend?
`v'
Huh, Ogiwara-kun's taking a while to reply... Wait, why is he calling her?
`v'
Apparently, feeonse is fiancée. That means she's engaged to Akashi-kun. That means, Ogiwara-kun says, she'll get married...
...She'll get...
...Get married...
"You'll get married with Akashi." Ogiwara-kun laughs and then hangs up because no one's answering him (her phone is lying on the floor now, what can she do?).
She's going to get married to Akashi-kun.
She'll be Akashi-kun's wife.
And then they'll get naked and— she needs to take a break from being Aomine-kun's friend. He's a bad influence. She blames that pervert ganguro for a week of the awkwardness she feels around Akashi-kun.
She may or may not have a wet dream (not even wet, just a bit damp, really) about Akashi-kun during that awkward week. No one will ever know.
She blames Aomine-kun and the internet.
(14 years old)
Kuroko likes holding hands with Akashi-kun (she's also developed a habit of burying her nose in his hair and basking in the silkiness and sweet scent but, again, no one needs to know).
And a jerk joins the club. He's rude to Kuroko and tries to be polite about it. He often asks her (and everyone else who'll bother with him) why someone weak— and a girl, on top of it— is assigned as his personal instructor. She just ignores him most of the time. She also has to keep Akashi-kun at bay or it'll be the end for that flashy jerk.
Then they have their first match together and win, and then he's overly cheerful, touchy feely, clingy and noisy around her. He's the ultimate weirdo (and real flashy). He's a good friend though. She likes Kise-kun. Partly because she pities him and feels a little protective of him because... well, Akashi-kun. He hates the poor guy a little more. He tells Kise-kun to keep his dirty mitts off his fiancée. Kise-kun just goes off to wash his hands and goes back to acting all touchy feely with Kuroko. She just lets him (be reasonable, not even Akashi-kun can keep the blonde away from her) because Akashi-kun's pout is cute. Makes her want to tease him even more.
She makes it up to him with a peck to the lips. She makes sure Kise-kun sees it and makes sure Akashi-kun knows Kise-kun sees it. Because Akashi-kun being all smug around the crying blonde is even cuter.