"Rest here today; from tomorrow, your training will begin," I said to my siblings; they were kept in the river tower; it is not a prison, far from it. It is a guest tower for the common tyrants, who come to the Pyramid with a guest pass.
They have relative independence in the tower; they could go to the other floors and try different things, from the restaurants to training rooms.
Though they only have today as free, from tomorrow, their training will begin, and they also will get to experience the things people of their age do. These two know anything about fighting or the real world; they will need to experience everything.
Of course, the Pyramid will be watching their every move extremly carefully; the slightest problem and they will be sent back to the ruin; any sign of subservient and they will be killed. The Pyramid did not take the risk with such things.