Don't worry, you can ask anything you want.
Right now I'm doing a different vn. After finishing it, I have 2 ideas that I would like to do. 1 of them is for Koko.
I see something complicated to do a remake. Because I would have to redo everything from the beginning, as well as add some more content and also extend the game as if it were a sequel, and maybe it would be too much work. (Besides that, it maybe would be repetitive for those who already played the original story too).
For now, I see better the option of a sequel. I already have a slight idea about the plot, and until I read your comment, I hadn't considered adding Miroku.
Initially, I was only going to focus on Koko and another very "special" character. But, after reading you, I will try to make her appear and have some development. Although as I say, nothing is certain yet. But I will definitely keep her in mind.