A Traveler to Other Worlds

The idea here is a guy, who for reasons he does not understand, finds himself drifting from one fictional world to another. Worlds that are fake yet real at the same time. His time in each varies from several days to a several years (but seeming to cover little or no time in the real world, something like a dream, where a lot happens in a short period of time).

Sometimes he uses his knowledge of the characters/settings to seduce the characters, sometimes he just has his way with them. Sometimes there is a (relatively short term) relationship, sometimes it is just sex. The women might be adults, or younger.  Other times he decides to use his knowledge of these worlds to try to find ways to improve them, either the worlds themselves or individuals in it. Usually finding and pairing up with one of the women he is aware of in the setting and using his knowledge of her to build trust and ultimately a relationship, and if he is there longer, to use knowledge of the world to possibly build wealth, comfort and power for himself and the woman and potentially their family as well.

One option also is that he sometimes appears in some settings as a woman (he may or may not have some control over this) and if so, he might end up with either a man or a woman, depending on the circumstances (when he is a woman, he is 100% a woman, and does feel attraction to men and women).

He may at times inherit power that is natural to the setting (magic for example) but he is not a god. The idea is he will sometimes succeed and sometimes fail. He has many advantages, but he is not perfect. Depending on the setting he is in, the focus will sometimes be purely on sex, love and relationships. In other settings he may also be involved in trying to fix larger problems and dealing with very dangerous people/situations (though if he dies in one of the settings, he just likely gets pushed off to a new one, rather than truly dying).

There is a rather large list of settings that could be involved, it would be easier to discuss settings and figure out what we mutually know and like on a individual basis.