The next day, Kai woke and immediately gave an order to Shark Head.
"You don't need to act normal from today onwards, change your behavior and go to the library for me to learn the language." Kai conveyed this message using thoughts.
He doesn't have the patience to tolerate Shark heads anymore, so he orders him to change his behavior even if it arouses someone's suspicion.
Kai needed to learn their language because the Shark head wasn't capable of conveying messages to him by thoughts.
'I need to implement two-way communication in this technique, so I don't have to learn something every time.'
SHARK HEAD'S POV
'I need to visit the library today first as said by master.'
Shark Head woke up from his bed and ignored the mermaids. He got dressed up and left to visit his butler.