The 13th Doctor

[Kowan]

JRPGfan said:

Saw a few episodes now and then... meh.
Overall my thoughts: it doesnt fit with the story.

His "soul" or whatever, always morphs into a man.
Why would it suddenly go woman? there has to be some sort of explaination if they do a shift like this.... otherwise it ll be weird from a story standpoint.

They need to explain the "why" of it.

Because Time Lords can regenerate into any gender or race. Simple as that. There is no permanent gendered soul or anything. What dictates the next regeneration is his race, and not anything else.