My Bride is a Mermaid
There's No Business Like Show Business (1x19)
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After the attempt to rid of Nagasumi from Sun fails. Akeno is now undertaking a mission, to foil Nagasumi by forcing him to gulp down a mermaid drink which will release mortals of their strongest desires, thus forcing Sun to break away from Nagasumi. The plan fails, however, when everyone except Nagasumi gets drunk.