The conversation ended on an unhappy note.
Marvin had not chosen any of the proposed solutions, as the situation had not escalated to that point, and it certainly wasn't time to hastily extract Levin's soul; but to be on the safe side, attempts to make contact with the Witch God Cult of the Fudo Kingdom had to start.
Fortunately, Dino had dispatched people to establish a subsidiary in the Southern Continent two months earlier, ostensibly to purchase local Magic Potion Ingredients, but in reality to transport Magic Potions from the Romanov Kingdom to the Southern Continent and then use ships from the Kingdom of Frederick to convey them to the Kingdom of Windsor.
After multiple transfers, the origin of the Magic Potions could at most be traced back to the subsidiary in the Southern Continent, so any accident wouldn't implicate the Manstein Potion Company.