The thing I heard about was apparently something called Bond Crystals in the DMM version, which you can get for selling or using a knight in the upgrade process. Those crystals can be later used for other things, for example a 5*+ ticket.
Since we can't be sure if that feature will ever get to us, I'll need to rethink keeping those duplicate knights.

It's funny to see you guys discussing this topic, I actually got a lesson in Bond Crystals yesterday in the Discord.
I'd suggest anyone who wants to find out more to head down to the #DMM thread there and ask for a quick explanation.
Bell/Soul (two of the players that hang out in that thread) are always more than happy to explain the whole thing and any other little things like Bond Crystals to us non-DMM players.

Selling or foddering 6*s = 12000 bond crystals
5*s = 1000
4*s = 200
3*s = 10

4x3* equipment or 2x4* can be converted to 10 bond crystals through refinement, which doesn't provide exp or coins.

You can buy up to 20 Danchou Medals per month for a total of 15000 bond crystals. More medals are obtainable from the daily 100 DMM point/Nutaku gold gacha rolls. 1/roll

A Danchou Ticket(5*+) costs 100 Danchou Medals with the first one(now two) disconuted to 60 medals.

If you get a 5* from the ticket, you get 1/10 of the currency needed for a 6* of your choice.

Originally Posted by Mindrunner

Can you get Danchou medals without using real money?

Buying them with bond crystals doesn't cost money.

so 13 ham slices or whatever they are and <500 dolls left over...good run....now time to farm 12-3 again

So, the 20 rice cake stage seems to take less time to clear the the 10 ones (4~7 seconds remaning after two runs agaisnt nothing~1 second for the 10 one). Nice. 3 runs is easy to do even with lags. This event end will be really easy.