An advertisement for the Otaru Aquarium that suddenly appeared in Sapporo has become the talk of the town. It is a message of sadness, with the name of the newly opened urban aquarium "AOAO SAPPORO" in Sapporo...

What a sad message... especially

This one word brings tears to my eyes.

Irony from an old aquarium...? But the real relationship between them...

Otaru Aquarium is a long-established aquarium that has been operating in Otaru City for over 60 years. Recently, however, it has been attracting attention for its humorous exhibits, such as the "Seasonal Oishi Tank," which displays edible creatures, and the penguin show in which the penguins do not listen to their keepers at all.

The Otaru Aquarium suddenly sent out a message to a new aquarium to be opened in Sapporo. The fans who saw the tweet and advertisement found it both funny and exquisitely sad,

Cute."
It makes me want to go to Otaru Aquarium.
I love it more and more."

I love it more and more.

However, it is not well known that there is a deep connection between Otaru Aquarium and AOAO SAPPORO, which seem to be rivals at first glance.