Or he'll somehow manage to help Jenny take everything from her brother... MC did think of killing him as well which would be the easiest way for Jenny to get everything. If this game has multiple endings which I think it does, I think a sacrafice ending could be perfect, MC kills Tom(tbh I forgot his name I think its Tom) to save the girls, Jenny gets everything and in the process MC goes to prison, we have an emotional scene the girls are crying,especially Jenny and MC tells them that "everything will be okay then a few years later dude comes out the can for good behavior and the girls are all there to welcome him back,MC is free and he finally gets the life he deserves for everything he has done and sacrficed.
Of course this is just an idea for one of the endings and I think it would be fitting for this MC.