Red Sprite (a Touhou LW original) refers to a type of electric discharge that occurs in the mesosphere. This is an apt temperament for Tenshi, who descended from Heaven. Tenshi is endowed with Earth Phase as a member of the Hinanawi clan that serves the Nawi clan (strong against Fire Phase but weak to Wood Phase), Metal Phase since she's a celestial who lives in Heaven (strong against Earth Phase but weak to Fire Phase), and Water Phase thanks to the Water Web of Heaven and Earth (strong against Metal Phase but weak to Earth Phase). Thus, she is strong against Metal Phase but weak to Wood Phase.

The ability of Tenshi Hinanawi from the world shrouded in scarlet mist (a Touhou LW original). It is essentially the same as our version of Tenshi's ability. Tenshi had always intended to come down from Heaven to play, but never so soon. She had to expedite her plans because the Scarlet Mist Incident had lasted too long, and its influence had spread too far. She was also unable to procure the Sword of Hisou, so she took a different artifact instead―the Water Web of Heaven and Earth. Thus, this Tenshi came down to Gensokyo with different motives and a different main weapon. Tenshi thought it might be necessary to cleanse the entire Earth with a great flood because the scarlet mist had completely decimated the land with almost no hope of recovery. Tenshi is a celestial, so it goes without saying that she is much smarter and wiser than anyone down on the ground. Even if she's considered a good-for-nothing upstart by other celestials, she is still superior to everyone in Gensokyo purely due to the fact that she's a celestial. That's why she decided to descend from Heaven before things truly became irreversible. However, she soon regretted not making that decision sooner. Tenshi was annoyed that the ongoing disturbance prevented her from playing in Gensokyo. She wanted her first descent from Heaven to be fun. In Heaven, she had a bird's eye view of the incidents, their resolutions, and all the bullet battles since before the official rules had even been established. Competitors in battles of bullets get attacked from all sides in three dimensions, but from a celestial's perspective, it looked like a simple game where you merely had to weave through the gaps in a horizontal plane. Thinking she had uncovered some great secret, she falsely assumed she could do whatever she liked down in Gensokyo. She was soon faced with the reality that the girls fighting in battles of bullets were merely pieces on a game board and that the incidents were truly decided by the players who controlled those pieces. That's why the Gensokyo Sages exist. This led Tenshi to believe that the mist was their doing. However, after investigating some more, she realized it wasn't that simple. The other celestials look down on Tenshi, but there's no denying that she possesses quick wits and a cunning mind. With a little bit of guile, she easily managed to get the other celestials to tell her what she wanted to know. There are a few edge cases, like the Hinanawi clan, but Heaven is mostly populated by beings who have attained enlightenment. However, Heaven is not their final destination. All celestials are fated to eventually leave this realm and reincarnate elsewhere according to the laws of the karmic cycle. Apparently, there is a way to free oneself from this cycle, called liberation or emancipation, and this is probably the ultimate stage of enlightenment. So where do the people who have attained this enlightenment go? Nobody knows, but since the number of these people can only increase, it makes one question whether the number of souls in the universe is constant. Then again, nothing stipulates that people can only reincarnate in one direction from the past to the future... Celestials have spent countless years pondering and formulating their own ideas and philosophies about this subject. Having heard all this, Tenshi concluded that just thinking about stuff like that sounds incredibly boring. But she was also delighted and proud that she could actually put this knowledge to use. The karmic cycle and the universe are one and the same, so those freed from the cycle must leave the universe. However, there are multiple universes. And if there are boundaries between these universes, then it should be possible for that youkai, who's always watching, to cross them. The Water Web of Heaven and Earth is a mighty artifact that can fully manipulate Water Phase temperament. It is also known as the "Muroken Konmou" or the "Mist Dew Qian-Kun Net," and it originally belonged to a certain celestial princess. However, like most artifacts of Heaven, the Water Web can choose who wields it, so its capabilities are limited by Tenshi's strength and its relationship with her. Artifacts are special magic items that can do all sorts of things, but the most powerful ones are said to have defined personalities. The Water Web cannot speak in its current form, so it communicates in other ways, but perhaps one day, it will take a different form that has a vocal apparatus. Tenshi heard from a poem-loving celestial and a sword-loving celestial that this artifact's rightful owner is a renowned and celebrated celestial... Of course, Tenshi didn't ask her for permission to borrow it. The Water Web figured that it would rather be wielded by someone inexperienced with artifacts than never get used at all.