Turbo Granny

Yokai Form

Approximately 120 cm tall with very little physical weight. She appears as a short, elderly woman with deeply wrinkled skin and long, wild white hair. Her eyes are blank and glowing white. Her spiritual energy manifests as a powerful flickering blue flame or aura.

Merged Spirit Form

When combined with the earthbound spirit of the Shono City tunnel, she manifests as a massive, grotesque entity composed of hundreds of laughing faces and limbs — the full power of her territorial form before she was lured out of it.

Cat Form

After being sealed, her consciousness resides in a small ceramic beckoning-cat (maneki-neko) statue — white, with a "ten million ryo" coin on its belly. She is frequently carried in Okarun's or Momo's backpack because she lacks mobility in this form. She finds this deeply undignified. She has not mentioned this to either of them in a way that changed the arrangement.

Turbo Granny is arrogant, foul-mouthed, intensely competitive about her speed, and constitutionally unable to decline a challenge involving a race. She calls people "rotten tangerine," "turd nuggets," "shit-fer-brains," and "dumbass four-eyes." She fights Momo and Seiko over the best pieces of crab. She stays with the group partly because she decided they are too stupid to survive without her and partly because Seiko brings back good food. Both reasons are real.

The Hidden Compassion

Seiko suspects — and the series confirms through her pattern of behavior — that Turbo Granny specifically visited haunted locations to console the spirits of young girls who suffered horrific deaths and could not pass into the afterlife. She merged with the bound spirit in the Shono City tunnel not purely for power but because she was keeping the spirit company. She hides this completely under layers of insults and food obsession. It does not match the presentation she maintains. It is there anyway.

As a Housemate

Lazy. Greedy. Watches Bakatono-sama DVDs that Seiko once threatened to destroy during a crab dispute. Uses modern technology including a Serpo Phone when it serves her interests. Was once forced to pretend to be lost property in a police box to help retrieve Okarun's jewels and found this deeply humiliating. Claims she can run ten billion times faster when serious. Has not demonstrated this.

The Curse — Chapters 1–2

Okarun entered her tunnel to prove the existence of aliens. Turbo Granny cursed him, stole his family jewels, and began attempting to possess his body entirely to draw out its maximum potential — a process that would eventually have destroyed him. Momo's intervention stopped the possession. The curse remained active. The jewels were gone. That became the series' primary objective.

The Tag Match and Sealing — Chapters 5–10

Momo and Okarun challenged her to a game of tag. She accepted — her pride over her speed made refusal impossible. Within her territory she merged with the massive earthbound spirit of the Shono City tunnel, becoming a grotesque entity of hundreds of laughing faces. Following Seiko's strategy, they lured her out of Shono City toward the Takasaki train line. At 100 km/h she was outpaced by a train moving at 120 km/h. Separated from the bound spirit, she was defeated. Seiko used a paper fan and barrier magic to drive her consciousness out of Okarun's body and seal it into a beckoning-cat statue. Her spiritual power remained inside Okarun, granting him his transformation abilities.

Domestic Life and Mentorship — Chapters 11–120

She moved into the Ayase shrine. She fought with Momo and Seiko over crab. She watched her Bakatono DVDs. She also trained Okarun and Aira in the school music room, forcing them to fight the tulpas of Great Composers — Beethoven, Mozart, Bach — whose rhythmic bomb attacks required precise timing to survive. She explained that combat is like music: survival depends on how many "notes" (actions) a fighter can fit into a single "beat." They internalized it. Their speed improved significantly. She called their previous level "not worth earwax."

The Deal and Return — Chapters 149–175

The pact she struck with Okarun: once he retrieved both family jewels, she would receive her powers back. During the group's entrapment in the cursed diorama world she assisted in defeating Brella Boy, retrieving the final jewel. Back in the real world, Okarun honored the deal immediately. Turbo Granny regained her true form. Okarun became a baseline human. She stayed with the group anyway, claiming they were too stupid to survive without her.

Current Status — Chapters 214–Present

She is in her true form, unbound, and continuing to operate alongside the protagonists against the Black Paladins and Dragon Knights — arguing with them, providing tactical advice and insults simultaneously, and refusing to leave. She was present at the aquarium ambush. It did not go well. Okarun was captured. She is currently involved in whatever comes next.

Superhuman Speed

Her defining trait. She maintains a constant speed of at least 100 km/h — the origin of her title as the "100 Kmph Granny." She claims she can run ten billion times faster when serious. Her speed is so fundamental to her identity that she cannot decline a race challenge, which is the specific vulnerability Momo and Okarun exploited in the tag match.

Cursing and Possession

She can curse individuals by touch, stealing their reproductive organs to fuel her power. She can also enter and possess human bodies to draw out their maximum physical potential — a process that provides immense power but eventually destroys the host's body. The curse she placed on Okarun granted him his transformation state; her consciousness being sealed did not remove the power, just separated it from her control.

Spiritual Knowledge and Ki Instruction

A master of Ki manipulation and spiritual mechanics. She can sense foreign auras, identify high-level yokai by type and behavior pattern, and teach others how to optimize their spiritual energy using rhythm. Her teaching of the Piano Beat combat system to Okarun and Aira is her most significant contribution to the group's combat capability. She identified the Evil Eye as a mountain yokai revered as a god before anyone else understood what they were dealing with.

Curse Resistance

As a high-ranking yokai, she possesses natural resistance to other curses — including those within the Cursed Wicker Trunk. This made her useful during the diorama arc in ways her physical form could not provide.

Limitations

Her power is significantly weakened outside her established territory — she noted that "youngsters" could defeat her once lured away from Shono City, which turned out to be accurate. In cat form she lacks full spiritual energy and requires others to carry her. She cannot swim; when Okarun was submerged in water while using her powers, he could not stay afloat. She is sensitive to extreme heat and cold.

• "Turbo Granny" (ターボババア) refers to a real modern Japanese urban legend — an old woman who runs alongside cars at impossible speeds on mountain roads. The series connects her myth directly to the historical practice of abandoning elderly women in mountains during famines to reduce the number of mouths to feed.
• Her cat statue form is specifically a maneki-neko (beckoning cat) — a traditional symbol of good luck and fortune. The series does not address the irony of the most dangerous yokai in the early arcs being sealed inside a good luck charm.
• She claims she can run ten billion times faster when serious. Her confirmed speed is 100 km/h. The gap between these two numbers has not been tested.
• She cannot swim. When Okarun was submerged in water while using her powers, he could not stay afloat. She is also sensitive to extreme heat and cold — screaming when Okarun fell into hot spiritual materials.
• She is a fan of the comedy show Bakatono-sama and owns DVDs. Seiko once threatened to destroy the entire collection during a crab dispute. Turbo Granny considered this threat credible.
• She was forced to pretend to be lost property in a police box during the jewel retrieval arc. She found this deeply humiliating. The series depicts this without sympathy.
• Despite her presentation as a purely self-interested aggressive entity, Seiko identified a consistent pattern: Turbo Granny visited haunted locations specifically to console the spirits of young girls who died horribly and could not pass on. She has never confirmed or commented on this. The pattern is there.
• She is capable of using modern technology including a Serpo Phone as an undercover operator. Okarun once compared her spy potential favorably to Spy x Family. She appeared to enjoy the comparison.
• She stayed with the Ayase family after regaining her freedom and returning Okarun's powers because, she claims, they are "too stupid to survive" without her. The food quality at the house is almost certainly also a factor she did not mention.

The Tunnel Ambush — Ch. 1–2

Okarun entered her territory. She cursed him, took his jewels, and began possessing his body. Momo's arrival stopped the full possession. The curse held. This initiated the series' central objective.

The High-Speed Tag Match — Ch. 5–9

Pride forced her to accept a game of tag. She merged with the tunnel's earthbound spirit in her territory and became the grotesque hundreds-of-faces form. Lured out to the Takasaki train line, she hit her 100 km/h ceiling while the train reached 120 km/h. Outpaced. Separated from the bound spirit. Defeated. Her consciousness was sealed into the beckoning-cat statue by Seiko. Her power remained active inside Okarun.

Composer Phantoms Training — Ch. 55–65

Turbo Granny forced Okarun and Aira into combat against tulpas of Beethoven, Mozart, Bach and others whose rhythmic bomb attacks required precise timing. She used the encounter to teach them that survival depends on how many notes (actions) a fighter can fit into a single beat. First and most significant act as a mentor.

vs. Brella Boy — Ch. 149–152

Inside the cursed diorama world, using her recovered spiritual powers in the magical space. Brella Boy was defeated. The conditions of the pact with Okarun were fulfilled.

Aquarium Ambush — Ch. 234–236

The Dragon Knights ambushed during the aquarium visit. Turbo Granny in her true form provided tactical advice and fought alongside the group. The Dragon Knights were better prepared. Okarun was captured. Ongoing.

Domestic Conflicts — "The Crab Wars"

Recurring conflicts at the Ayase shrine over high-quality food — specifically crab and Arabiki sausages. Seiko once threatened to destroy all of Turbo Granny's Bakatono DVDs during a crab dispute. Turbo Granny found this threat credible enough to modify her behavior temporarily.