- Mountain of Faith
When she first sees the heroine, she immediately runs away, but comes back and ambushes her. After the midboss fight, she says her "optical camouflage suit" broke, which confuses the heroine. Nitori mentions that the heroine is pretty strong to beat her even with the camouflage, then warns them that the mountain is dangerous for humans.
- Subterranean Animism
During the events of Subterranean Animism, she is one of the kappa who hears from the God of the sky, Kanako Yasaka about the new power of nuclear fusion in the Underworld. However, they are unwilling to go there due to the oni living underground. Learning that Reimu is going underground to investigate, she convinces Marisa to explore there as well, since she doesn't seem to have anything better to do.
- Hopeless Masquerade
She's trying to run a stall by the temple when Byakuren confronts her over her pricing. They fight and after winning, Nitori finds herself getting into fights when all she wants to do is make money. She tries to convince Reimu into letting her open a stall there but she refuses, leading to a fight. Mamizou ends up surprised by Nitori appearing before her. When she finds Kokoro, she has the idea of trying to sell her some masks that might have some hope, provoking the final battle.
- Impossible Spell Card
Presumably from hearing or seeing a wanted sign about the mischief-making amanojaku Seija Kijin, Nitori appears to be one of the many youkai that tries to capture her. She uses spell cards that are considered impossible to dodge.
- Urban Legend in Limbo
Nitori, ever a prospective entrepreneur, uses the Urban Legend Incident for profit, and travels across Gensokyo attempting to sell and buy Occult Balls, using an artificial Urban Legend. Because they cannot be exchanged without a fight between two persons holding them, she mostly ends up taking other people's Occult Balls without paying for them.
- Antinomy of Common Flowers
In Antinomy of Common Flowers, Nitori again seeks to profit from the incident by artificially reproducing it. She teams up with Hata no Kokoro and uses her power over emotions to aid in research. Nitori ends up creating a mask that can simulate Perfect Possession.
- 100th Black Market
Nitori appears in 100th Black Market as a hidden boss on the 4th Market, unlocked after beating Chimata Tenkyuu. Chimata sends Marisa Kirisame to Moriya Shrine after their fight to meet with an accomplice of hers, which turns out to be Nitori. Nitori, frustrated by the monopoly the yamawaro have over the black market, agrees to help Marisa destroy it, and after Marisa defeats her in a fight, she gives her a special Ability Card to help with the task.
- Wild and Horned Hermit
Nitori frequently appears in Wild and Horned Hermit, mostly with other kappas. She's commonly seen operating in business ventures to seek profit from current fads or events, running stalls selling goods or building structures with the other kappas. Her first appearance is as a cameo in the first chapter to illustrate a kappa losing its arm, but didn't get properly introduced until chapter 12.
In chapter 12, Nitori was amongst the kappa driven out of their hideout in Genbu Ravine due to the huge pillar of water created by kishin chief Suiki to attack Seiga Kaku. She expressed fears that the kappa may have angered Lord Suiryuu, but this fear was unfounded.
In chapter 22, Nitori was one of the kappas who searched for Manzairaku using sonar and searchlights. Perturbed by crowds gathering to watch the seal, she and the kappas moved it to the Abandon Pond and opens The Manzairaku Show there. simultaneously moving away the crowd and "making a killing" while at it. When Manzairaku becomes depressed, it was Nitori who asked Kasen for help. After being explained that the sea mammal requires saltwater and fish, Nitori and the kappas builds an artificial saltwater pool for it.
In chapter 25, seeing signs of an astronomy boom, Nitori builds a planetarium in the Human Village, she gave Reimu a VIP ticket to assuage the shrine maiden's fears of a youkai gathering.
In chapters 38 and 39, Nitori was one of the kappas who worked on the construction of the Moriya Shrine ropeway. She convinced Sanae to power the ropeway using geysers belonging to the shrine, exploiting that the geysers will quickly render the machines unusable, requiring monthly maintenance (and payments to the kappa). When the ropeway was delayed, she swears to Kasen that the kappa would never intentionally cause a breakdown on their creations to help their business.
- Symposium of Post-mysticism
- Forbidden Scrollery
In chapters 14 and 15, Nitori along with the other kappas were using an old shack close to the Human Village as a warehouse to keep their items because the Abandon Pond, their original warehouse, was completely frozen. To keep off the humans from approaching they used the "Seven Wonders" to conceal their identities and to guard the shack. After Reimu told them the humans already noticed something strange was going on, Nitori couldn't help but to find another place to store their items, the Forest Ghost Mansion Warehouse.
In chapters 28 and 29, Nitori and the kappas ordered a printed book from Suzunaan and was detected by Mamizou Futatsuiwa. Suspicious of their activities, Mamizou infiltrates the kappa's secret cucumber garden where they were growing cucumbers. After detecting and confronting Mamizou and explaining that the kappa started growing cucumbers using a book on selective breeding of cucumbers from the outside world, Nitori reveals that the book she ordered printed from Suzunaan was a manual on cucumber recipes and preservation methods and that the book itself can allow the holder to use magic on a cucumber to make cucumber dishes.
- Visionary Fairies in Shrine
In chapters 11 and 11.5 of Visionary Fairies in Shrine, Nitori and the kappas, due to their hideout being flooded, started a new business of "canyoning", where customers would be carried down the river currents, making use of the unusually strong river currents in the Genbu Ravine at the time along with the kappa's ability to manipulate water. After finding the three fairies, Nitori used them as guinea pigs to test the river courses. The canyoning business was a success and Nitori managed to convince Marisa Kirisame to try it out. However, after Clownpiece's torch caused a kappa's power to go out of control and throw an entire river into the sky in the shape of a dragon, the canyoning business was temporarily suspended due to safety concerns.
- Foul Detective Satori
During the events of Foul Detective Satori, Nitori can be seen running a stall in the human villager while wearing a disguise. Mizuchi Miyadeguchi uses this as an opportunity to possess her and throw the heroines off her trail. Later, Mizuchi is seen using Nitori's body to tamper with one of her machines for an unknown reason, after which she ditches Nitori and allows her body to float down the river until it is discovered by Hina Kagiyama.
- Lotus Eaters
Nitori and the other Kappas fled from their hideout at the Genbu Ravine during a great storm. They were then employed by Kanako to deal with the flooding in exchange for business at the Moriya Shrine.
- Whispered Oracle of Hakurei Shrine
Reimu Hakurei writes a fortune slip about Nitori as a way of cleaning up in the aftermath of an incident.
