I would put this in a game as an untracked quest except if you really dig around it was actually someone that killed the parent and started living as him so if you revert save and keep him alive eventually the kid will show up and some manner of altercation will happen depending on how you completed relevant tracked quests
I would just subtly add pressure to turn the main character into a necromancer, resurrecting the good people they killed and trying to make good on their wrongs, whilst slowly succumbing to the dark magic that will ultimately consume them and turn them into the worst bloodmage villain that teletubbyland has ever seen
I would put this in a game as an untracked quest except if you really dig around it was actually someone that killed the parent and started living as him so if you revert save and keep him alive eventually the kid will show up and some manner of altercation will happen depending on how you completed relevant tracked quests
I would just subtly add pressure to turn the main character into a necromancer, resurrecting the good people they killed and trying to make good on their wrongs, whilst slowly succumbing to the dark magic that will ultimately consume them and turn them into the worst bloodmage villain that teletubbyland has ever seen