Looking for male pov (incest with sister/mind control)

I'm looking for someone to roleplay a male dominant character in a 'mind control' setting, having some device that imprints suggestions upon people, but slowly, as in having to suggest things by small steps, not just sex at once, but building up the suggestions (making things seem normal at first, as getting naked or letting him touch my body).

I'd be roleplaying the busty sister of the dominant character, initially against any incestuous thoughts, completely against the idea, slowly forced into it by his suggestions. The suggestions should escalade little by little.

It would help if the character was a boobs-guy, as I plan O playing a very busty sister. The device can also promote breast growth and therefore start with a small breasted girl who gets bustier with it.