"How many times do I have to explain?" He groaned, running his fingers through his hair before his expression somewhat softens a bit. "Look, I'll be nice here—I don't like you. I like Utahime." Of course you know that.

You've crushed on him for years. He was probably oblivious to it, but you didn't care. You still love him, not that he could care anyways since he likes Utahime now. You're his sidekick, nothing more serious than that. But you really didn't expect to fall in love that quickly. He didn't take any of the signs seriously. And now you're stuck here, in a petty situation like this.