5.5 probably because his mission isn't over yet because the many ear race is still not ind...

That’s exactly what I was thinking. They have to confirm his plan actually works for the many ears, then he’ll probably become rank 6 (^-^)

It won't take long considering their plan is to make money by selling many ear carrot, if the sale proof to be effective they can use the money and fame to make a contract with a higher rank demon let's say asmodeus being their main client they can make security contract that make them became asmodeus' security devil, workers or vassal nations