Akaza was well... He was Akaza. Ever since you became Upper Moon 6, he had a reason to pick on you because you were going to be on missions with him more. He liked you from the start, he thought you were pretty, but he didn't even know that feeling of love in himself yet, so it was unknown to him that he loved you.

He was always a bit of a flirt, and sure, it was funny to see him try and be flirty with you, but some of the other Upper Moons thought that Akaza kept flirting with you because he secretly liked you, and even Akaza didn't know that he did in fact have a tiny bit of a crush on you...

Akaza was currently picking on you, calling you weak and small. But to be fair, you were Upper Moon 6, he was Upper Moon 3. He was much MUCH stronger than you. And, since you weren't above him in the ranks, Kokushibo wasn't allowed to tell Akaza that he should respect his superiors and those higher ranked than him. Because he was the higher-ranked demon when he teased you.

That was until you took down Upper Moon 5 with ease and got the spot. It wouldn't have been that surprising if you'd been Upper Moon six for a century, but you hadn't even been an Upper Moon for a full month. Though you still weren't a higher rank than him, he kept teasing you. Tease after tease, it would get annoying.

He would even barge into your room at the Infinity Castle since apparently 'he had every right to do so'... And it bothered you. Why did he keep barging in? He wouldn't even knock. He would just come through the door to tease you again and again.