@Sleabedybarb,
@celluloser,
@Darklight99 well it definitely was a bit confusing because a lot of moments that are being referred to are previous chapters. The oldest one was scanlated 3 years ago. Actually reread the series to be entirely up to date again. And boy, do you only then realize how much the artist, art-style and characters have changed and grown.
Anyway, for context:
Chapters related to Yorimoto (explains the gang) =
Chapter 40 &
Chapter 51
Honda talking to Soushi about Yorimoto (explains about Honda) =
Chapter 61
Tsuji (Arita's police friend) talking to Soushi about him him planning something =
Chapter 73
Kikuchi punching Long (this + previous chap useful for next volume) =
Chapter 50
Long threatening Yamato =
Chapter 67
Sasazuka (also will help with understanding the following chapter) =
Chapter 54 &
Chapter 69