I once read this manga where a girl was going to a rich school where there were 2 different classes. One was the Butler class and the other was the Upper Class and the main character was challenged to find someone that would be just HER butler, which she ended up getting this rich and cool guy who was only in the butler class for the challenge of it. Does anyone know the name of this manga?

Shitsujisama no Okini Iri?

yep that's it thanks soo much!!!