As far as I've seen, its impossible to get duplicates of a costume.

Can anyone whose rolled a billion times verify this?

16 rolls (the quest given ones are not counted) got 4 sets of clothing, 2 underwear, rest ougi and skill cards.

So far, did not get a duplicate. I thought I did too, because one time I did the 5 ticket thingie, and won 2 clothing sets and they almost look alike (purple and blue)

You will need around hundred of rolls of get dup like CB

TheTMD wrote:You will need around hundred of rolls of get dup like CB

The thing is... it seems you can only have one of each type of costume at the moment, so we were speculating if it was outright impossible to roll duplicates as a result.