Fantasy Simulation Hypothesis

Okina Matara's Last Word (a Touhou LW original). She attacks by forcefully placing the targets under her domain. Okina is in charge of maintaining balance in Gensokyo and protecting it from the outside world, from the other side. It is speculated that Okina hosts a range of powerful abilities since she is a secret god. However, the fact that she maintains all of Gensokyo by herself (and her two servants) indicates that she has a power on par with providing non-stop air traffic control for the whole region. It seems that Yukari and her shikigami are skilled at mathematical computation, but perhaps Okina and her two servants hold a similar ability between them. Although a barrier does surround Gensokyo, it is most likely only thanks to Okina's efforts that Gensokyo is protected so securely from the outside world and its stability maintained so well despite all the various incidents.