I suspect he's related to Sylhan killing, if not outright being the murderer and blaming it on Sylhan.
there is someone who has read the novel and explained it on another website
Wait that’s totally possible too
Can you share the website or give some spoilers please ?
do you have a link for the novel?
So this family was in with the conspiration to have his father murdered and fed him poison to mess up his mind and have him lose his memories.
The reason he is not dead as well is because ML negociated and had one arm removed (later the wizard helped him by experienting with monsters and gave him a monster arm. thing is that the monster would take over if the arm is not periodically removed and reatached ) and promised to go with his army and fight/win that war in Arlo for the kingdom. Lysbeth promised to keep MC safe and did a hell of a fine job of it
This is totally crazy …they did him so dirty
So Lister did something to Sylhan …something really bad (the way he frowns every time he touches him was a sign already )
And Lisbet help his brother by making Sylhan takes a medication that makes him lose his memories
And they covered the whole thing as sides effects of his illness
Please correct me if I’m wrong