A black cat who spent years trying to sneak into a Japanese art museum and became an internet icon for his persistence has sadly passed away.
A familiar face at Onomichi City Museum of Art
Ken-chan, the black cat famous for repeatedly attempting to enter the Onomichi City Museum of Art in Hiroshima since 2016, has died peacefully on September 20, the museum announced on November 11 via X (formerly Twitter).

According to the museum’s English obituary tweet, Ken-chan had been receiving treatment prior to his passing. The museum also noted the special meaning behind the date of the announcement — November 11 marks the anniversary of Ken-chan becoming part of their “family.”
We will never forget our days with Ken-chan. Thank you,” the museum wrote.
A cat who captured hearts
The news sparked an emotional response online. Fans from Japan and around the world flooded the museum’s posts with condolences and old photos of Ken-chan lounging outside the entrance, faithfully attempting to sneak in past the security guard who always stood in his way.

Some even shared photos of a sign the museum had once displayed, warning visitors to stay alert because “a black cat may try to enter.”
The legendary cat and his security guard rival
Ken-chan’s playful standoffs with the security guard became a viral sensation years ago. In countless clips, he could be seen approaching the museum doors before being gently stopped only to flop dramatically to the ground in mock defeat.

Over time, their “battle” turned into a heartwarming friendship. Speaking to Japanese media after Ken-chan’s death, the guard said:
Even now, it feels like he’ll come from around that corner. This is the first cat that got so attached to me. Thank you for the memories.”
From viral star to cultural icon
Ken-chan’s antics inspired merchandise including tote bags, calendars, and even a manga series titled “Mr. Security Guard and the Cat”, released in 2021.

Following his passing, the museum announced that it has produced 500 limited-edition 2026 calendars featuring Ken-chan’s most beloved photos, a fitting tribute to a cat who brought smiles to thousands.

The tale of two cats
Ken-chan wasn’t always alone in his adventures. In 2017, an orange cat named Go-chan began joining him in his attempts to enter the museum.

Like his black-furred companion, Go-chan was politely turned away by the same vigilant guard before being adopted into a loving home in 2019.
Ken-chan, meanwhile, was said to be the resident cat of a nearby restaurant and remained a local celebrity until the end.

