Sorry, my answer may not be clear enough. If you ask the manga author if he would draw sequels or derivative works of the same work, the answer is no. Most manga authors would set a clear storyline and ending for their works and would not draw sequels or derivative works. This was because comics were a commercial activity, and authors would usually obtain economic benefits through the sale of copyrights. Sequels or derivative works might violate the copyright of the original work, so they were not accepted by the author.
The 'obey me novel' often involves a story where the protagonist is immersed in a world full of demons. There are various characters with unique personalities and powers. The plot usually includes elements of the protagonist's interactions with these demons, building relationships, and dealing with different challenges and mysteries in this otherworldly setting.
I think 'Sasaki and Miyano' is also among the best. The story is set in a school environment. Miyano is a fudanshi (a boy who likes BL) and Sasaki is a popular boy in school. Their relationship starts from Sasaki's interest in Miyano and slowly blossoms into a deeper connection. It has a lot of cute and heart - warming moments, and the way their relationship progresses feels very genuine. It also touches on the insecurities and self - acceptance that the characters go through.