can somebody here tell me what should be the story for this? ^^

I'm not really good at telling shoujo stories but here is a suggestion:
Suggestion #1:This story can be about two siblings that have been seperated at birth and years later they finally meet but have no idea they are siblings so they fall in love.
Suggestion #2: Can be some sort of a fairy tail...judging द्वारा the way they are dressed.
Suggestion#3: Can have a dark twist to the fairy tail
....have a look at the video below to see how its like.

One दिन a young prince is tired of these "Marrige interviews" of spoiled princesses. So one दिन the prince runs away from घर taking his maid (The girl beside him)but what he doesn't know about the maid is that she is already in प्यार with him, but has a short temper and knows how to "kickass" the prince meets a family of a old woman and an old man and their grandaughter who is the princes age. The daughter falls in प्यार with him and is always attached to him. The grandaughter pretends to be kind and sweet but is always rude and cruel to the ex-maid and is SURE the prince will fall for her since she is "prettier" and has a "Bigger chest" than the maid. Well, this is what I think would be extremely interesting to have as a story! Let me know if आप like it! :D