Hand-drawn is definitely the best style in my opinion because the details are very noticeable, but I don't leave out the classic 3DCG when done very well
definitely renpy because of the possibility of saving at every moment, unity and rpgm fail in this, not to mention that renpy has most of the best and most famous games, and it is much easier to make modifications
It's good to see Brazilian games, I've met few Brazilian developers making good games in our language
I liked the renders, they deviate from the standard of known characters