Need help with my choice

Gonna give this another shot. If you have read at least some of “It Started With A Bra” you know that it allows you to choose if you want to be with a male or a female. Does anyone know how to do that? The choice lasts (I believe) throughout the entire story. I’m trying to figure out how to do that.

With gains?

Apparently, it works the same way! You can just switch MC_Male to maybe like LI_Male?