Madam Woo/Sinjin is Tetsujin, and as such she probably understands Hugo very well. And of all the places to wash up, there is probably the luckiest place for him to be.
The Master of an Aggregate in Buddhist teachings, must not become a slave to it. ( I am not a Buddhist by any means, merely spent a lot of time at their temples, I met a 100 year old Monk in one who had some very interesting thoughts on the ideas behind the book and was very much the template for Sinjin. His concepts on gender being an illusion, on love being a universal truth, and knowledge being a tool to understanding and not the end goal of life... well you can see his influence)
Time to learn.