The highly anticipated Season 4 of the anime series Mr. Osomatsu will premiere on July 8, 2025, airing every Tuesday at midnight (JST) on six stations within the TV Tokyo Network. This marks the franchise’s first-ever simultaneous broadcast across all six stations. The series will also air on AT-X starting July 9 at 10:00 PM (JST).

To celebrate the announcement, a new main visual and the official promotional video (PV) have been released. The PV previews the opening theme song, titled "Mr. Osomatsu no Bombaché!", performed by iconic J-pop group DA PUMP. The track's high-energy vibe perfectly matches the series' signature absurdist humor.

Mr. Osomatsu is based on Fujio Akatsuka’s classic gag manga Osomatsu-kun, and follows the chaotic adult lives of the six Matsuno brothers, now lazy NEETs (Not in Education, Employment, or Training). The anime celebrates its 10th anniversary in 2025, adding further excitement to this milestone season.

The new main visual, illustrated by Eiji Abiko, character designer and chief animation director, shows the sextuplets reveling in summer fun—complete with surreal elements like a UFO and a giant octopus, capturing the chaotic essence that defines Mr. Osomatsu.

In the PV, fans can glimpse the brothers’ carefree antics, now set to DA PUMP’s latest theme song, generating high expectations for Season 4’s debut.

FAQ

When does Mr. Osomatsu Season 4 premiere?
The season premieres on July 8, 2025, airing every Tuesday at midnight (JST) on six TV Tokyo Network stations. It will also be broadcast on AT-X from July 9 at 10:00 PM.

Who performs the opening theme for Season 4?
The opening theme, "Mr. Osomatsu no Bombaché!", is performed by DA PUMP and can be previewed in the official promotional video.

Who created the new main visual?
Eiji Abiko, the anime's character designer and chief animation director, drew the new visual, which shows the brothers enjoying a chaotic summer.

Mr. Osomatsu S4 Trailer

Source : ORICON NEWS