Sleepy-chan is my target.

Because her ability is so powerful, so why not choose her.

Like I said long time ago in this thread, my main spend in DMM FKG for any rainbow resource.
So rainbow coin I have most of it come from special deal.

Ghost ; Aqua-boss stage drop 3* girl + medal for trade in shop most.
My main reason farm this stage is medal, other stuff is extra reward.