Ple-Sen
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Tea with iriki candies is basically a kind of food. Slonysh is cooking something. And Plesena from the signature, after eating the apple of Adam, would even eat the snake if it turned out to be forbidden.
And another association – it's Tako's avatar. Her avatar depicts a child. And an iriki candy is essentially a sweet that children love to eat.
What is the connection between tea and Gura's signature?
Added after 38 seconds
The connection between my signature and tea is obvious: Englishman, England, English tea party, tea. Plesen probably followed this logic.