You could replace the ml with a handsome and rich cardboard and the story would still remain the same. He barely causes anything in the plot through his own actions, its all about who he is rather than what he does and honestly I usually don't mind ML being in the sidelines while MC does everything but it just doesn't make sense in this case because it's ML and his nephew that's at the centre and the trigger of the plot.
Ml barely even have presence in everything, and when we had this moment of emotional scene with him, I don't feel emotional and I even felt angry that his such a coward sometimes xD
You could replace the ml with a handsome and rich cardboard and the story would still remain the same. He barely causes anything in the plot through his own actions, its all about who he is rather than what he does and honestly I usually don't mind ML being in the sidelines while MC does everything but it just doesn't make sense in this case because it's ML and his nephew that's at the centre and the trigger of the plot.