Responses
It should be side stories of the comic books, I think. Normally japanese comic books would have around 5 chapters with small 1-2 pages of omake (extra). So that why it’s not relevant to the main story. Chapter 5 should be the last chapter of book 1.
（￣へ￣）? ch5 and ch6 dont seem like that meet well after what happen in ch5? ya know like no talk or anything just jumps into everyday life in ch6???