So the chapter is out and a certain person gets in the way as always. So zanpanktou's share a common name in a family, I am not up on Japanese or Chinese culture to know if there is a numerical relationship between Engetsu and Zangetsu. I wouldn't be surprised if there was. So Captain Shiba already is aware that SS is behind this, whether all or only a select few. Nice to see smart heroes every once and a while, they don't need the Scooby Do team to explain everything to them.