You can visit this blog post to keep track of the Known and Fixed Issues
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Patch Notes Week #18
01.05.2024
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Adventure
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World 18 โ Gems Kingdom Province
Quest 11 โThe Dark Castleโ:ย
โRelax, itโs just a boobie trap.โย
Check out the latest adventure!ย
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Art Survey
Vote for your favorite girls in April in this survey.
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Improvements
Now you can use Paypal to purchase a Season Pass.
You asked
You're almost right (and this would already be nowhere near worth it if you were). It seems the odds are actually evenly split between all 6 possible equipment AND the girl shards, so it's only a 1/7 chance to get shards at all with each non-final victory.
TL;DR: Not even taking orbs into account, it's WAY cheaper to just flat out pay the 5.4k for the girl in Epic Pachinko than to even touch the Champion. V_v