Rokumon

Rokumon takes the form of a small black cat with large green eyes. When seen by those with spiritual abilities, Rokumon appears as a cat body with a boy’s face.

For ordinary people, Rokumon simply looks like a cute black kitten.

Rokumon can also transform into a gigantic monster cat’s head, especially during moments of excitement or danger.

Rokumon is fundamentally loyal and polite, especially toward Rinne, Sakura Mamiya, Tamako, and Ichigo.

Rokumon always uses respectful honorifics (“sama”) with these characters.

Despite this, Rokumon is not above calling rivals or enemies rudely by their names without honorifics, showing a preference for respect only toward those Rokumon likes or deems worthy.

Rokumon boasts a clever, analytical mind, acting as a valuable advisor in both calm and dangerous situations.

However, Rokumon has a highly self-assured, even narcissistic side, sometimes overestimating Unknownself.

Rokumon's wild cat instincts sometimes lead to violence with very little provocation, including attempts to get Rinne’s classmates into trouble for petty reasons.

Above all, Rokumon’s biggest weaknesses are delicious food and money. Rokumon is not above betraying Rinne in return for luxury meals or cash, often leading to amusing disputes between them.

Originally Tamako’s partner as a contract black cat, Rokumon was ruthlessly fired and replaced. Afterward, through Tamako’s referral, Rokumon arrived at Rinne’s side.

Because Rinne is extremely poor and cannot pay a proper salary, Rokumon joins Rinne on the unique contract condition of “self-funded food.” Rokumon spends much time obtaining food from compassionate humans by acting as an adorable kitten—sometimes enjoying better meals in Sakura’s room than what Rinne can provide.

• Holds the first-rank level among black cats, with the title of Most Valuable Cat (MVC) in the black cat grading exam.
• Appears as a cat with a boy's face to those with high spiritual awareness; appears as a normal kitten to others.
• Can transform into a gigantic monster cat head, capable of scaring humans or even flying with Sakura and friends riding.
• Displays notable intelligence, sharp analysis, and calm judgment.
• Can physically overpower normal humans, as seen when subduing several high school students at once, but is powerless before truly dangerous spirits.
• Sensitive to danger and wealth: hair stands up when facing powerful foes or piles of money.
• After being knocked out or when receiving a shock, Rokumon reverts to an ordinary kitten appearance.

• Rinne Rokudo: Main contractor and partner; Rokumon supports Rinne in both fieldwork and daily life, despite their regular quarrels over resources.
• Tamako: Former partner, still shown respect as Rinne's grandmother.
• Sakura Mamiya: Close friend and regular provider of better meals; Rokumon freely enters Sakura’s room via spirit pathways.
• Ichigo: Frequently feeds Rokumon; considered a “second master” and supported accordingly.
• Other characters: Rokumon calls Tsubasa Jumonji, Masato, Kain, Renge Shima, Matsugo, and many others by name only, reflecting Rokumon's assessment of their worthiness.
• Routinely betrays Rinne over food or cash, but mostly returns to Unknown side as a loyal companion after.

• Rokumon's catchphrase is, “Funa~go!”—often spoken when in monster form or scheming.
• In the anime adaptation, the start of Rokumon's contract with Rinne is altered; Rokumon aids Rinne and Sakura Mamiya when attacked by evil spirits.
• Known for behind-the-scenes savings and secretly calling partners by unflattering nicknames.

• “Funa~go!” (Uttered during transformation or sneaky schemes)
• “Rinne-sama, please take care!” (Polite to Rinne even when scolding Unknown)

From Tamako to Rinne

Rokumon starts as Tamako’s black cat, but after being fired, Tamako introduces Rokumon to Rinne Rokudo, hoping Rokumon can strengthen Rinne’s connection to the afterlife.

At first, Rokumon refuses because Rinne can only pay with six coins (a paltry sum), believing Tamako's introduction to be part of some larger plan. Rokumon’s initial rejection changes after accidentally seeing the notice of termination from Tamako—sympathy and Rinne's earnestness persuade Rokumon to enter into a new contract.

Survival Tactics and Food Quests

Because Rinne cannot afford to support a familiar, Rokumon survives by acting cute and getting strangers to feed Unknownself. Rokumon often sneaks into Sakura Mamiya’s room, sometimes enjoying higher-quality meals than the main master.

Rokumon’s misadventures around food and money are a recurring source of comedy. Whenever luxury treats or cash are at stake, Rokumon sometimes betrays Rinne, even attacking or scamming Unknown own master.

Fighting and Supporting

Though physically small, Rokumon is known for unexpectedly strong displays, transforming into a massive monster-cat head to scare adversaries, fly allies, or subdue foes. Rokumon’s clever plans often save the day, although accidents caused by inexperience or over-enthusiasm frequently cost Rinne extra money or effort.

Character Growth and Two Sides

Over time, Rokumon's dual personality becomes more prominent: usually loyal but capable of gleeful betrayal. Secret savings, grumbling, and plotting against Rinne (especially over food or prizes) pop up repeatedly, only for Rokumon to return to loyalty once the excitement passes.

Rokumon is considered by everyone—both friend and foe—as Rinne’s trusty but troublesome sidekick, never far from the center of the action.