Blue Jet (a Touhou LW original) refers to a luminous phenomenon where it appears as if blue lightning shoots up from thunderclouds. This is an apt temperament for this Tenshi, who is from the world of eternal summer. She benefits from both the durability of the Universe Ring (Strong against Metal Phase and Earth Phase) and her sun-resistant celestial skin (Strong against Sun Essence). However, when her artifact vehicle breaks down, even she doesn't know what to do (Weak against Star Essence).

The ability of Tenshi Hinanawi from the world of eternal summer (a Touhou LW original). This ability isn't any different from the Tenshi of our world's ability. Since the earth in this world has sunken beneath the waves, does that make the sea a part of the earth? In most worlds, Heaven supposedly exists far above the earth. However, in this world, it can be found not far above the sea. But why? It turns out there are two main reasons. One is related to the Moon. It's widely known that the Moon's gravity causes the tides to rise and fall. Even if the Moon's gravitational field remains constant, should the volume of water on Earth increase, the seas will be pulled closer to Heaven―and that's exactly what happened in the summer Gensokyo. The other reason stems from the belief that the sea and the sky are one and the same. Given current scientific knowledge, it's hard to believe, but long ago, the distinction between sea and sky was somewhat unclear. When a giant ship sailed across the ocean and arrived in China, the native people falsely believed it had appeared out of thin air. And when Xu Fu crossed the sea to Japan, people assumed he had descended from Heaven to the peak of a mountain. But with things like that really happening from time to time, who can blame them? Then there's the Utsuro-bune, an unknown object that washed ashore in Japan long ago, which looks rather similar to a UFO. Heaven is a land of the immortals. Hourai is one of the promised lands, and it lies far beyond the eastern sea. It's said that celestials and hermits enjoy idyllic lives there. According to the legends, Hourai is actually a mountain sat upon a giant turtle's back, and as the turtle swims through the sea, Hourai appears as a mysterious moving island. So perhaps Hourai, an island of immortals that floats just above the water's surface, is one form Heaven can take. But this world's Tenshi didn't know any of that as she sped along in her Universe Ring. The true owner of the Universe Ring possesses countless artifacts, to the point where they could aptly be called an artifact hoarder. With so many artifacts in their collection, Tenshi figured they wouldn't mind if she borrowed one or two. In fact, the artifacts would probably be grateful to be used. Tenshi had lent another artifact borrowed from a different celestial to Shion, but the owner most likely hadn't noticed that. Such is the extent to which celestials in Heaven have no fear or concern for what goes on below. "Lady Iku Nagae's signal is coming from 150 nautical miles ahead." "Thanks, Universe Ring. At last, we'll find out why she flew off like that." "I heard she's somewhat like me." "She is. The way you talk and act is similar." "How interesting. I can't wait to meet her." "Hmm, I feel like something bad's about to happen…" "Oh." "Wh-What is it?!" "Even if I tell you now, there's nothing you can do." "Huh?! Just spit it out already!" "There's a reef up ahead. Try not to crash."