Kaitei Kazan (a Touhou LW original) refers to submarine volcanoes. This is an apt temperament for the goddess of Eternal Summer Hell. The laws of Phases and Essences have been completely discarded, leaving only a slightly troublesome ambition to create a new Hell paradise! Hecatia is a goddess of Earth! (Strong against Earth Phase.) A goddess of the moon! (Strong against Moon Essence.) And a goddess of the Otherworlds! (Strong against Star Essence.) Did you think this blue Hecatia was just a goddess of Earth? That may be the case with her Spell Cards, but she is actually rather free to be and do whatever she wants. She can even manifest all three of her bodies at once! In our world, Chang'e's husband shot down the sun, so the sun's rays should be a fair bit weaker now than they were in the Age of the Gods. Light contrasts with darkness, so the absence of strong light also weakens true darkness. However, this goddess firmly believes that the sun's rays are nothing but poison to young, pale, and beautiful skin! (Weak to Sun Essence.)

The ability of Hecatia Lapislazuli from the world of eternal summer (a Touhou LW original). This ability isn't all that different from the Hecatia of our world's ability. And unlike Yukari Yakumo, Hecatia can use her ability in earnest. She is at full power. She always exerts her full force in this world with its jubilant climate. She devotes everything to play. Also, you may think that the blue-haired Hecatia is always the goddess of Earth, but that is not necessarily the case. However, it is true that blue Hecatia really suits the beach. Everyone has a latent memory of a midsummer imaginary older sister. An imaginary older sister is a kind and slightly whimsical sisterly presence who took care of you in place of your mother when you were young. She let you hop on the back of her bicycle, bought you a popsicle at the corner store, then said, "let's rest a while." You sat together in the shade of a tree near a river, and she would pat your head while you both enjoyed the cool breeze. When you started to feel sleepy, she let you rest your head on her lap. She is the older sister whose fragrance contains a hint of lemon and whose name you can no longer remember. But you do remember her a little, don't you? What is the connection between the Goddess of Hell and your imaginary sister? Well, the path taken by souls of a past life can vary, but there is a very high chance that the soul of your past life passed through Hell on its way to reincarnation. That means that you have most likely met the goddess of Hell. That's right, your memories of your imaginary sister are your memories of Hell that were not deleted due to some mistake! That is why you have so many memories of a hot summer. In our world, during the Age of the Gods, Chang'e's husband shot down the sun, which caused the darkness of Hell to become less dark. This was the event that led Hecatia to accompany Junko on her quest for vengeance... However, did this event also occur in this world? If the sun of this world has retained its original power, that may explain why this world's climate is so tropical... Be that as it may, this blue Hecatia grew tired of her water-submerged Hell. She searched for something fun that would entertain the souls that visit her Hell and prevent the other Hells from stealing her visitors. She wanted something fresh, revolutionary, and emotional... A thought struck her! "Why don't I visit Gensokyo to research the latest trends?! " "What's this big round green ball thing?!" "A watermelon?!" "A symbol of summer that you can play with and eat?!" "That's fantastic!" "This is just what I was looking for!" "Are we eating watermelon again, Mistress?" "Hecatia, with so much watermelon, we're going to have to eat them for breakfast, lunch, and dinner all week." "Huh? What's the problem? They're delicious!"