List of quests (Cold Steel III)/Chapter 2/Do Me This Favor

"We've been asked to retrieve a black briefcase that's being targeted by the Intelligence Division. The whole thing seems a bit shady, but they sound like they're genuinely in need. We were told to see Xin for details."

Do Me This Favor (黒いアタッシュケースの回収) is a hidden quest that occurs during of .

Background
The quest is available after entering the Heiyue Building in the Harbor Area.

Walkthrough

 * 1) After the event in the Heiyue Building, head to Ursula Road 1 and go to green exclamation mark on the map.
 * 2) Juna Crawford needs to be the one who fishes up the briefcase.
 * 3) After retrieving the briefcase, automatically return to the Heiyeu Building to complete the quest.

Notebook

 * Xin and Lau told us the briefcase likely ended up somewhere along the shore of Ursula Road, so let's try looking there first.
 * Juna volunteered to fish up the briefcase.
 * After a quick angling session, we got the briefcase and returned it to Xin! Turns out, it was full of letters meant for people in Crossbell City.