We finally saw ts happen(Fine was just mentionned i believe), will we see the girls getting a D at some point too(i actually expected it when i saw Fine messing with them)?
As per the story, Gender Change Skill is heavily restricted, and unauthorized usage of the skill is heavily punished (probably because it could easily be misused to commit crimes and escape getting caught).
The only place where the Skill is allowed to be used is in the Coliseum, and only against the loser.
As for the girls getting the D, well that depends on many factors.
Firstly, all single battles in the Coliseum are held in opposite pairing (aka., one opponent would be a male and the other female).
If the Male wins, then there is no usage of Gender Change Skill.
If the Female wins, then the Male is subjected to the Gender Change Skill , while the Female gets to use the D Grow Skill.
Now the thing is, unless the girls under MC fight in Solo matches against male opponents, the chance of the D Grow Skill being showcased in low.
As until now, all the matches had featured MC as the primary opponent (even in tag team). So, all the targets for his win where females (the tag team battles originally had the rule of getting the female of the loser, but it got changed later on to both the losers go to the winner, based on demand of MC's opponents).
Maybe, the next round of battles would be about MC acting as the strategists and not fighting in the battles, while his girls fight in single and doubles round.
In this scenario, its possible to see MC's girls with D's.
Though on a side note, i wonder what happened to the slaves that those girls (aka., men who got turned into female) had before MC defeated them.
I think there was a chapter which showcased them in action for MC's training but nothing clear was mentioned regarding them.