Sorry but which potion or how to use it on Katana becouse i think i used every potion on him and the conversation is the same everytime and nothing changes
Hi NoiseVoice, you should be able to use the Spring Water on him. It's in the bottom-left shelf of the potion shop. If that doesn't work then it must be a bug. Have you tried talking first, then using item, or are you using it on him directly?