Like A Dragon: Ishin has many different substory quests that players can find and try to complete. One of which is The Amnesiac substory.
The Amnesiac is a straightforward substory that is hard to miss. In fact the main story will take you right by it. It sees Ryoma encountering a man on the ground, possibly hit from behind?
SUBSTORY QUEST: The Amnesiac
CHAPTER: Chapter 5 – The Iron Code
QUEST GIVER: Incapacitated Man
REWARDS: Dead Branch, Friendship Bond, 150 Virtue
LOCATION: Sannocho (Rakugai)
Make your way to the bridge over in Sannocho, Rakugai. Then head towards the castle that featured in chapter 4. Here we will find a man on the ground.
Ryoma will conclude that they must have hit their head and we need to patch him up. We can use any healing items. Either a Ointment, Vitality Pill, or even an All-Purpose Medicine will do the trick.
The unconscious individual will then wake up but is still unable to remember what exactly happened to him. Continue the conversation
This will then conclude the rather basic The Amnesiac substory for Like A Dragon: Ishin