do nothing and let karma consume the child of your enemies? or save enemy's child while turning it against your enemy? or choose the lame path of being the 'better' person which may result in more pain for yourself. Did he become a teacher to stop others from being bullied too like him? or will he pass on his pain towards others. perpetuate the cycle of pain or end it. these are very tough decisions.
Edit note: This is my impression before even reading the series.