Merlin first explained it briefly to Old Wilson. On hearing that Merlin was going to the Imperial City, Old Wilson did not inquire further, only exhorting him to stay safe in the Imperial City.
Thereafter, Merlin went to see Charise and Avril. They had only been pregnant for more than a month hence no baby bumps were visible yet. However, they had already paid extra attention as both were wearing loose clothing.
Unlike Old Wilson, after hearing that Merlin had to leave Wilson Castle, Avril was extremely upset, so she pouted her mouth and sulked, while Charise was silent. Perhaps, with Merlin's departure this time, he would not be able to see the birth of the children in their wombs.
In this regard, Merlin also felt very helpless. He could only assure them again and again that he would try to return to Wilson Castle after a few months.
After comforting Avril and Charise, Merlin called Wizard Bammou to the room and explained some things to him carefully.