Kazuharu Fukuyama

Driven by lecherous impulses, this manipulative opportunist frequently appears unexpectedly to exploit situations for his own gain. He harbors a predatory obsession with the girls surrounding Yukinari, constantly attempting to lure them away through deceitful means. Despite his sleazy and harassing nature, he maintains a deep familial bond with Tomoka, who views him as an older brother. He lives a life of extreme luxury, residing in a massive mansion alongside his sister and an all-female staff.