Talk:Edo Castle Infiltration Investigation/@comment-202.92.146.136-20170321090130/@comment-29686453-20170321091914

if koban is not an issue, I believe it's possible. I just got 20ish keys from a single run in E4. You "only" need to open 10 boxes per day, which won't be too hard if you own plenty kobans. I have really questionable luck, too, so I'll be spending my kobans until I get the kiwame equipments ^^