Doosik didn't lead the organization to Mihyun hahah, they were basically watching and following Mihyun everywhere she went because they knew Doosik would return for her. Min's real plan is to get them to know each other because Min knows they're the same type of people (humanists) and will probably fall in love. Doosik is too powerful, so they need to control him somehow, and making him have a weakness (Mihyun) is what Min wanted from the beginning.