This is a list of BL novels featuring or associated with a system, as well as novels in which characters travel to different worlds, whether or not they involve a system. The selections are based on their synopses, so there may be some inaccuracies. Please keep in mind that this list is highly subjective, so use your discretion when reviewing it. I tend to avoid heavy drama or tragedies, so the genres mainly include fluff and slice-of-life.