Talk:Expeditions/@comment-86.70.90.211-20151024210159/@comment-187.39.154.67-20151025171141

I guess D4's a keep as it gives the guaranteed 200 koban box and you can also be lucky enough to get a Great Success.

I'm also exploring C3 and completing Daily Missions K2 and L2.

Altogether that makes a good amount of koban everyday.