Tried the Ai Shield Game, and the big problem is that even if the hero has a submissive streak, they are extremely unlikely to immediately submit to the first bratty little girl they come across, maybe if they are super horny, but even then doesn't seem very likely, and in the story, the hero doesn't come across as being super horny anyways.
The personality of Ai isn't sultry or seductive, she's just an obnoxious brat, and we're supposed to accept that the hero will just submit to her in less than a day? That the hero will lick the girl's feet, and let the girl urinate on them almost immediately after meeting? Just doesn't seem believable.
A slower burn would be better for the story, have the hero slowly descend into the girl's control over the course of many days through smaller nudges. That would be more realistic.