That place that felt familiar to Wizet was, of course, the "Otherworld" he had visited several times before.
He appeared before the star cluster representing the Cheering Charm. This time, replenishing the Cheering Charm star cluster went remarkably quickly.
Wizet had originally planned to explore the "Otherworld" further, but the Cheering Charm star cluster had already been replenished, and his consciousness returned to reality.
After returning to reality, he received only one piece of information from the "Otherworld" concerning the Cheering Charm.
The Merpeople of the Black Lake were now more easily affected by the Cheering Charm, which could effectively soothe their emotions.
Even if the Merpeople of the Black Lake fell into a rage, casting the Cheering Charm on them could quickly calm their anger and lower their guard against the caster.
It seemed that the Cheering Charm had merely gained an additional trait, and its range of application was rather limited. It only worked on the Merpeople living at the bottom of the Black Lake, somewhat like the Patronus Charm against Dementors.
As Wizet recalled what had happened earlier, this unexpected development had clearly occurred because he had cast the Cheering Charm through Ancient Magic Power nurtured by time.
Combined with the information he had previously uncovered in the "Shadow World," he could draw a conclusion: changes occurring in the "Shadow World" could affect the real world.
Just like the experiment Wizet had conducted moments ago—he had used Ancient Magic Power nurtured by time to cast the Cheering Charm upon the Merpeople's light-and-shadow forms, leaving an indelible influence upon them.
That influence spread into the real world, changing the Merpeople of the Black Lake and making them more susceptible to the Cheering Charm.
From this perspective, Wizet had indeed helped improve the Cheering Charm.
It was precisely because