Chapter 15.1 typically represents a split-chapter release (a common practice in digital manga serialization), continuing the protagonist's adventures within the academy or his personal workshop.
The manga is based on a light novel series published by Futabasha Publishers Ltd. . Chapter 15.1 Availability Chapter 15
If you are looking to read the latest chapters, you can check community sites like Anime-Planet for status updates or official publisher listings at Futabasha . and Slice of Life genres
This series falls into the popular Isekai , Fantasy , and Slice of Life genres, often featuring lighthearted or "comfy" elements (indicated by the term "yuru-i"). Chapter 15