
As stated by Usopp, Tsuru is a legendary figure. She is consistently portrayed alongside Garp, Sengoku, and Kong as the leaders of the old gen marines.
As such, I think it’s very likely her wash wash fruit is much more powerful than it appears.
I think it’s very likely this DF is comparable to Bonney’s age fruit or Kuma’s paw fruit in that Oda will take the concept of washing and push it to it’s limits.
We know Tsuru can wash people and objects, making them malleable like laundry. There are many ways Oda could take this power, but I see two big ones.
- Tsuru can probably create/manipulate water in some capacity, as water is used to wash things
- Turning things into laundry
- Washing concepts such as Pain, memories, age, etc.
Ultimately, she’s called a legend for a reason. While she isn’t a confirmed CoC user like Garp or Sengoku, her at least having a busted DF is very likely.