[quote=@Gowi]
<Snipped quote by Hexaflexagon>

And that he didn't have an heir, so he let his wife's son (Sho Nei) be his de facto heir! 
[/quote]

So close but that's Shō Ei who is the second son of Shō Gen. 

So it goes Shō Gen --> Shō Ei --> Shō Ne And that all the history lessons I'm doing today. XD Because in the context of this story it does not matter that much. :rock