The results of the " Mr. Osomatsu General Election," a fan voting project held to commemorate the 10th anniversary of the TV anime broadcast of the popular anime " Mr. Osomatsu ," were announced on December 24th. Fans voted for their favorite scenes and episodes from the 10 years of TV anime broadcast in each category, and in the character category, where fans voted for the promise they wanted each character to fulfill, Karamatsu came in first place. It has been decided that a "Mr. Karamatsu Digital Photobook," which was one of the promises made by the characters, will be distributed. Details will be announced at a later date.
In the facial expression category, Todomatsu 's expression in episode 7 of season 1, " Todomatsu and the Five Devils," was selected as the top choice. In the background category, the living room took first place, and in the dialogue category, Ichimatsu 's line in episode 16 of season 1, " The Ichimatsu Incident," "I'm a Karamatsu Boy now," took first place. The six works nominated in the dialogue category will be streamed on YouTube from January 1, 2026.
It was also announced that a large-scale merchandise sales event for the series, "Omatsu no Ichi," will be held at Tobu Department Store Ikebukuro Main Branch (Toshima Ward, Tokyo) from March 26th to 31st, 2026. Event-exclusive original merchandise and merchandise created by the "Miyu Irino Goods Development Room" will be on sale.
The soundtrack CD for the fourth season of the TV anime, "Mr. Osomatsu Original Soundtrack Album 4," will be released on March 25, 2026. The bonus disc will include archives of the main programs from various radio shows that were released in the fourth season.
"Mr. Osomatsu san" is based on Fujio Akatsuka's comedy manga "Osomatsu kun." It depicts the daily lives of the sextuplets as adults, and its extreme humor has made it popular among female anime fans.
The first season of the TV anime aired from October 2015 to March 2016, the second from October 2017 to March 2018, the third from October 2020 to March 2021, and the fourth from July to September 2025. The movie "Osomatsu San Movie the Movie" was released in March 2019. To commemorate the sixth anniversary, the first new anime, "Mr. Osomatsu: The Hippipo Tribe and the Shining Fruit," was released in theaters in July 2022, and the second, "Mr. Osomatsu: The Soulful Takoyaki Party and the Legendary Sleepover," was released in theaters in July 2023.
