Thanks for asking! I have planned that he will gradually understand his capabilities as a Saiyan, in the first chapter he is like a human in the body of a Saiyan since he has been there for a short time, but as the story progresses he will explore his superpowers.
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Haha don't worry I like to read the feedback from my players, talking about an official android version I was planning to make it for when the game was finished, but because of your comment I will try to release it as soon as possible, hopefully now it will run on your phone!
And about the language of the game, I tried to get translations but it was impossible, but I understand that there are translation apps for all renpy games.