Good lord the Princess arc was terrible I'm glad that's over. I really wish the author made it like 100 years instead. You really expect me to believe these people have been around for 500 years when they just act like normal people?
I think the Yankee parasite is special by being able to move around by himself. The priest parasite died pretty quickly. Although I guess we'll see next chapter.
It always bothered me that skills like this create the bottle out of thin air. At least make it like wax bottles or something that could plausibly be converted.