Kasshou Giri (a Touhou LW original) refers to the mist that forms when humid wind ascends a mountain slope and cools as it rises. This is a fitting temperament for Nitori, who thrives as a solo game developer in the world of eternal autumn.　 Nitori's temperament has been thoroughly reconstructed from the laws governing the Three Essences and Five Phases. "Indie games are exciting!" (Strong against Fire Phase.) "They're so much fun!" (Strong against Water Phase.) "What?! There's a yamawaro game black market?!" (Weak to Wood Phase.)

The ability of Nitori Kawashiro from the world delirious with eternal autumn (a Touhou LW original). This ability seems practically the same as the Nitori of our world's ability. However, as a resident of the world with eternal autumn, she is far more open and honest about her personal interests and passions. For Nitori, that meant sharing the wonder of indie games with everyone. The world delirious with eternal autumn is a world overflowing with art and hobbies, suspended between abundance and demise. A world where the seasonal cycle of spring, summer, autumn, and winter has collapsed into an endless succession of autumns. Crops can no longer be harvested under such conditions, and without the passing of seasons, even endings cease to exist. It felt like the work of some mastermind behind the scenes, yet no one moved to investigate, at least, not openly. Maybe this incident had lasted for so long that it simply became a part of life. Or maybe it was an incident so intricately designed that everyone believed this perpetual autumn was perfectly normal. Even youkai are known to have concepts of religion and faith, as seen among the youkai of Myouren Temple or in the primitive beliefs once practiced by the kappa. Programmers too are known for their fervent devotion to their own gods. A programmer is one who manipulates programs, which are basically like spells that define the behavior of electronic devices. Machines that operate through such programs are generally called computers. However, in Gensokyo, they are called shikigami. There are quite a few beings in Gensokyo, such as Ran Yakumo, who could be described as programmers, or perhaps system engineers. This Nitori is likely one of them, though she seems to be devoted entirely to the art of game creation. AAA games are all well and good, but this Nitori prefers indie games and likes to work alone. Even if her games turn out a bit rough around the edges, she finds joy in bringing her own ideas to life by coding everything herself. Every now and then, game consoles from the outside world find their way into Gensokyo, and she has always been fascinated by them. After all, the world of games runs far deeper than it seems. As Nitori delved deeper into the world of indie games, she began to notice something strange. The games she admires most had drifted in from the outside world. Among them was one particular genre that seemed oddly similar to Gensokyo's traditional battles of bullets. Once she saw it, she couldn't unsee it. But what could this mean? Could it be that intel on Gensokyo's battles of bullets somehow leaked into the outside world, inspiring the games created there? Nitori considered the possibility, but it just didn't sit right with her. Something about it didn't add up, but she couldn't think of any other explanation. If this really was some kind of incident, there were plenty of so-called experts who'd handle it eventually, so she decided to leave it be. Most people, not just the denizens of Gensokyo, tend to act according to their own whims. No one ever truly got together to fight the great evil. That's not how the world works. That's why Nitori enjoys making games alone just as much as she enjoys playing games other people have made. However, the uncanny resemblance between battles of bullets and the games created in the outside world can't be a mere coincidence. Something must be happening out there. Something was happening out there. This Gensokyo is trapped in an eternal autumn, so its outside world can't possibly be normal. But what could be happening out there? Nitori was on the verge of realizing the truth, but she was far too absorbed in her game development to notice. At least for now.