So, for perspective, I've played event pachinko 9 times with no girls dropped, and single epic pachinko 18 times with no girls dropped.

Both currently seaming pretty worthless.
Had I saved the Koban I would have gotten 5 girls by now, and been well on my way to a 6th by using the 10 rolls on epic, which guarentees a girl each time.

Is this the same as other people are getting, or have I just been burned especially badly?