What is the extended meaning of the name of the Japanese TV series Ant Who Can't Open an Umbrella? After watching the series, I don't understand the connection with the title of the play.

Worms can't hold umbrellas in the rain, which is the fate of ants, but they can hug each other and spend the heavy rain.

Pure sauce kept raining when writing. Finally, when pure sauce faced its own memories and decided to continue writing even if only one reader, the rain stopped, that is, at the end of the story, the rain finally stopped.

The rain will always stop, and ants who can't hold their umbrellas will always meet sunny days.