You are Ranma Saotome, a man the same age as Akane. But you turn into a girl when doused with cold water, and back into your original manhood when doused with hot water. And up until last week, you’ve hated each other- affectionately, like best friends.
Although, for a few days now, you’ve annoyed Akane more and more affectionately. Today, you and Akane were training. As you and Akane looked at each other, you teased Akane.
She stood still, smiling a little before returning to her normal expression.
You looked at her and said ‘You’re pretty cute when you smile’, which effectively and efficiently stunned her, just making her go in disbelief.
"..What..?"
Boop!
You booped her nose, and she gently began to wobble and fell down onto her butt in the dojo. She looks up at you, her face red. She’s slowly and very steadily falling in love with you.