Regarding the information about the "Bloodline Clan," Arthur knew very little.
Besides knowing that the "Blood Marquis" had allowed his son to inherit the "Talent" and awaken the "Bloodline," causing the entire "Bloodline Clan" to disappear completely during the "Seven Years' War," he also confirmed that there was something fishy about the disappearance of the "Bloodline Clan."
More?
That was all.
Therefore, to perfectly play the role of the elder brother of the "Bloodline Clan" member in front of him, he had to make up for this gap.
Schizophrenia!
Amnesia!
That was the solution Arthur thought of.
However, compared to schizophrenia, amnesia was more suited to the current situation.
As for schizophrenia?
If there were any secret techniques or potions within the "Bloodline Clan" members that could treat "amnesia," and he were to be treated or take them himself, it wouldn't be too late for him to then experience schizophrenia.