Youtetsu no Ame (a Touhou LW original) refers to molten steel that falls like rain. This is an apt temperament for this world's Eika, who has awakened to her hidden animal nature. Eika is endowed with the temperaments of those who dwell at Sai no Kawara (Water Phase), jellyfish (Moon Essence), and a Sun god (Sun Essence). The flexible and patient Water Phase resists Metal Phase, because metal collects water, but it is weak to Earth Phase, because earth directs water. The cooperative and indecisive Moon Essence resists the alluring and arrogant Sun Essence, but it is weak to the diverse and uncooperative Star Essence. The alluring and arrogant Sun Essence resists the diverse and uncooperative Star Essence, but it is weak to the cooperative and indecisive Moon Essence. The combination of Moon Essence and Sun Essence cancels out any resistance or weakness to Star Essence.

The ability of Eika Ebisu from the world overrun with animal spirits (a Touhou LW original). There is no noticeable difference between her ability and the abilities of Eikas from other worlds. The 17th Prolonged Incident During the incident when animal spirits rushed into Gensokyo, Eika Ebisu was simply an observer at Sai no Kawara. When the humans flew past, seeking to resolve the incident, they destroyed the stone stacks the child spirits had worked so hard to create. This made Eika equal parts angry and sad. That is where Eika's involvement should have ended. The spirits of mizuko, stillborn children, are eternally trapped in limbo at Sai no Kawara, so it is hard to argue that their existence is in any way happy or blessed. However, if there is a silver lining, it is that Eika and her fellow spirits seem to really enjoy playing with each other. It is said that due to their lack of filial piety, the spirits of stillborn children are unable to go to Hell or reincarnate, and are instead sentenced to perform ceaseless and meaningless labor at Sai no Kawara. And as if that's not all, the oni, the wardens of Hell, periodically visit them to knock down their stone stacks. There is no salvation and no rewards for their efforts. It's like a kind of torture that erodes the heart and mind. However, Eika and her friends call the riverside their kingdom and their stone stacks works of art. They hold fun competitions to see who can build the best stacks. Of course, the oni still come to knock their stacks down, but that's the thing with art―it doesn't last forever. So, it doesn't seem to bother the spirits that much. It's like how some of the great artists of old created new paintings by reusing canvases and painting over their old work. However, this does not mean they'll forgive unexpected visitors destroying their creations. As the leader, Eika helps the other spirits by organizing fun events, scolding troublemakers, and offering a shoulder to cry on. It isn't hard to see how much she treasures her current lifestyle. The problem is that, for some unknown reason, she has suddenly become a lot more powerful. She has leveled up from being a mere observer to someone who can actually stop the incident from being resolved. Perhaps this power was inadvertently granted to her by the humans after failing to beat her in a battle of bullets. Whatever the case, Eika remains oblivious. Like all spirits, she never grows up, and her childlike mind has unconsciously accepted her increased power as a consequence of her being the leader of the spirits. Eika Ebisu might have some kind of connection to Shinto mythology. This is explored below. Since ancient times, two rulers working together have governed the nation―a man and a woman, a ruler of the masses and a ruler of priests. Amaterasu is the goddess of the Sun, and she has two brothers: Tsukuyomi and Susanoo. Tsukuyomi is the god of the Moon, and Susanoo, though his story is full of gaps, is generally considered the god of the sea. Amaterasu, Tsukuyomi, and Susanoo are the children of Izanagi and Izanami. However, their first child was called Hiruko. Due to the circumstances of Hiruko's birth, he was cast into the sea in a boat. Hiruko is also known as Ebisu and, as a god of the sea, is associated with flotsam, whales, drowned corpses, and stillborn children. However, gods usually come in pairs. If Hiruko is the male god, his female counterpart should be called Hirume, which happens to be another name for Amaterasu. There might have originally been two gods of the Sun, Hiruko and Hirume, who opposed yet complemented each other. Or perhaps the aspects of Tsukuyomi (the Moon god) and Susanoo (the sea god), which lie in opposition to Hirume, might have originally belonged to Hiruko. Because jellyfish also lack bones, they are often likened to stillborn children, and the Japanese word for jellyfish is "kurage," which can be written with the characters for "sea" and "moon." The Sun sets in the west, and at night, jellyfish rise to the surface of the sea, like tiny reflections of the Moon. The Sun, the Moon, and the sea are deeply connected. Before humans worshiped the Sun for its power to grow rice, they hunted at night and worshiped the Moon. They only learned the skills and knowledge required to grow rice from people who arrived from across the sea. But even before that, the first people in Japan might've needed to cross the sea to get there, too. These times have long since faded from human memory, but Eika still remembers bits and pieces.