Chapter 45 of Buta Koushaku ni Tensei shita kara sees Slow Denning intervene in a traumatic, predatory situation involving a princess and a classmate, using his future knowledge to alter the story's events. The chapter features a significant twist where Slow's sister is revealed to be alive and acting as an antagonist supporting the series' mastermind. You can explore fan discussions regarding this chapter at Reddit www.reddit.com/r/manga/comments/1lj9ggy/buta_no_fukushuu_new_chapters/.