Kate is the most reliable and hard-working sister so it is clearly not a priority for the developer, the personality of the MCs of both Lucky Mark and Amnesia, they are adults over 20 years old but they act like 13-year-old teenagers, without confidence or knowledge what they have to do and always perverted, they don't seduce, they don't care to listen to women, they don't improvise, they don't have charisma, it's frustrating to feel identified with such a character.
So most of the content is for women that you can act like a 13 year old pervert around.