It's a combination of different things,
She's cute, often drawn in the anime style.
Talks in the 3rd person which is very kawaii.
Big breasts (Of course!) as well as ones that expand when she gets excited.
The color pink makes me think of sex and gets me horny.
That tank top, those daisy dukes and those toon gloves are just too adorable.
She's a dickgirl with a penis that grows like her breasts do.
Has a sexy toned muscular body (In most of her art.)
Sometimes she grows dicknipples.
She was practically built for fucking.
She lactates strawberry milk.