To unlock the Tachibanagumi Request Board in Like a Dragon: Ishin, make your way to the upper area of Mukurogai. Along the path, you’ll come across men wearing Tengu masks. They will attack you so defeat them. Afterwards, they’ll run away and a woman will appear. She’ll bring you into the Tachibanagumi HQ and introduce you to the Request Board. Visit this board occasionally to retrieve new requests! As you complete these requests, you’ll fill out the Wanted Men completion list.
Man in Tengu Mask
Location: Eatery in Umekojicho
Objective: 8 Men in Tengu Masks
Reward: 2 ryo
Interact with the rowdy group of men next to the Shady Bar in Rakugai and speak with them. Defeat the waves of enemies that spawn then report back to Tachibanagumi HQ.
Jozo Tengu: Jozo
Location: Near Mukurogai
Objective: 8 Men in Tengu Masks
Reward: 4 ryo
Exit Mukurogai and take a left. Speak with the Tengu standing near the jizo statue. He’ll lead you to his boss. Defeat Jozo and his goons then report back to Tachibanagumi HQ.