Substories are short, often humorous, narrative arcs that flesh out the world and characters of Yakuza 0. They range from helping a struggling musician to dealing with bizarre cults. Completing substories often rewards you with money, items, and sometimes even new abilities or access to trainers. Keep an eye out for people with speech bubbles above their heads.

- Kamurocho Substories: Over 60 unique substories for Kiryu.
- Sotenbori Substories: Over 40 unique substories for Majima.
- Rewards: Yen, items, experience, new abilities, and sometimes new business partners.
- Activation: Look for NPCs with white speech bubbles on the mini-map.