Hello there, just discovered the game and must say i'm loving the look of it.

Having been confronted with the character creator, namely lip size , breasts, etc. it got me wondering.

Is the initial character creator the only way to change Hiro or are there events in the game that has Hiro grow breasts for example?

You can change from Masculine to Feminine through actions, I haven't found anywhere that he grows breasts yet.