Loving this story!! I see below mentioned, you don't have extra chapters on a patreon, but do you have one in general? This is the kind of writing I'm used to paying for, or at least contributing to.
Hey I just read chapter 74, I don't know what you have for MC's sister further in the story but if you haven't written about it I'm on the side of MC x sister for this.
I personally don't think webnovel.is a good idea i have never seen or heard good things about them from both authors and readers and i have been here for a long time