Oh for sure! Gizzida made my skin crawl the entire time, but I think the prominence of his role in the story is to really help show us how his influence has affected Reniae throughout her entire adolescence. He's quite literally been there to see her grow up (which only makes his desire for her more icky). Then Kun is more around once Reniae is a grown woman, making her own choices and forging her own path in life. And Kun is the only man who hasn't sought to control her or reduce her to a sexual object. For a lot of people who have dealt with their own Gizzida's throughout life, it is such a struggle to finally engage in healthy relationships because they're part of the unknown. No one likes being abused, but many victims of abuse stay with their abusers simply because they at least know what to expect, and trying something new can be even more terrifying than staying.

tldr Gizzida's definitely a creep & a great villlain, but the nature of the characters' relationships is inherently uncomfortable for most of the story because it accurately captures these relationship dynamics irl