When the time comes, even a rat becomes a tiger.
More Japanese Proverbs:
The second word makes the fray.Japanese
The head of a monkey, the headdress of a prince.
Japanese
Pick your wife in the kitchen.
Japanese
If every day was a sunny day, who would not wish for rain?
Japanese
Into the house where joy lives, happiness will gladly come.
Japanese
The day you decide to do it is your lucky day.
Japanese