just incase, as i might be misunderstanding your comment, but all the side stories are from CHP. 59 to 74. the ones titled simply 'side #' are just a separate, incomplete posting of those side stories. so if you mean the titled 'side.8' and 'side.9', those are CHP. 66 (66.5) and 67, and CHP. 68 is the last for that particular side story. but 69 to 74 are two more side stories (=・ω・=)
All 13 sidestories + 3 special chapters are, they're just not at the very top list, you have to scroll down and find them
*are here
Not uploading the final side stories is a crime and I’m lock ya’ll up. Esp considering how side story 8 and 9 ended like cmon