The equivalent meaning of this phrase is "See you in the next life".

Usually used when two people are separated by each other due to moving to another state etc. and to wish for blessings and goodness for each other. This phrase is popularized by a popular JPOP singer named Sayuri in which she used this term in the title of her song. Later, the title of the song began to turn as a fad and that's where "Raise de Aou" began to be used.
Chris: I need to go now Father. Raise de Aou!

Rudeus: Raise de Aou too my dear!
by 3dots January 7, 2019
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