That's the idea, yes, that Marc has been influenced by the example of his father, but he can be managed and get straighten to the right path as well, depending on choices made, very early in game during the movie night Myriam can put him back in place (as a few more opportunities later on), avoiding any naughty encounter with him as well as having him more like a normal teenager.
Yes, nearly everything (naughty) is avoidable in the game depending on choices made, but some choices will lock you on some specific paths as well and have unforeseen consequences. Most of the choices are fairly straight forward, but some are actually a bit sneaky and some can seem random (though they are very few of those), I tried to give a range of choices in the game to let the player move the story in the way he prefers (well, with the choices offered of course), and some other to keep the player on his toes as some come with consequences and for the few random ones, I put those to give somewhat of a sense of life into the game, as life can sometime be random, as well as to reward exploration.
Though I do realize that as much as I had a vision in mind when doing all this, not everything is perfect, I experimented a lot (and still am) to see how things would evolve, so every comments and criticisms are welcome, good or bad (well, of course I prefer good ones, but bad ones helped me make some changes for the better as well), it'll help straighten things up in my mind for the next project.
Thank you as always for all the love and support for the game, right now I'm hard at work on the start of the ending chapter, where some of the choices made during the game might have some consequences as well as some of the stats not used too much as well... (but no spoilers). ^^