In another isolated place in the Arcane Academy, Elric and his followers had been detained to self-reflect on their errors due to Core Elder Tykos giving the orders for the punishment.
Rodric had only recently heard about Elric's punishment and wanted to get Elric out of the predicament since Elric was one of his followers.
Unfortunately, upon confronting his father, who was also a Core Elder, the response he got was a blunt rejection, and he was ordered to not interfere in this matter at all.
The sole reason Tykos gave this punishment was because Lia and Raon were approaching the age of adulthood where their marriage would be officiated formally.
It wouldn't suit their clan to take in a son-in-law whose culprits weren't even punished in the past, so this was the least he did, as he was aware of the limited potential of Raon.