Tokai On Air is a YouTuber group with 709 million subscribers and an estimated annual income of several hundred million yen. One of the members, Toshimitsu, has unveiled his watch collection for the first time. Of the eight watches he owns, including Patek Philippe and Rolex, the one he is most attached to is a Cartier Tank. He says, "Watches are a man's romance," and adheres to his own unique values, with a penchant for the color green and a selection that emphasizes memories. Among his high-quality collection that even enthusiasts are impressed with, why did he choose Cartier as his "top pick"? We explore the reasons behind this.
Text by Yukaco Numamoto
Edited by Takashi Tsuchida
Edited by Takashi Tsuchida
[Article published on January 3, 2024]
Congratulations on the birth of his first child! A popular YouTuber who is gaining more attention after becoming a father

On October 21, 2024, Toshimitsu, a member of the YouTuber group Tokai On Air, announced the birth of his first child with his wife, Makochi, who is also a YouTuber. Due to feeling unwell with a high fever on the day of the birth, he was unable to be present at the birth, but he expressed his gratitude to his wife for giving birth to a boy whose facial features are so similar to his own. Fans have sent congratulatory comments such as, "He has many hobbies, so I wonder if he'll enjoy them with his son in the future," and "He seems like he'll be a great father."
Toshimitsu formed the YouTuber group Tokai On Air in 2013 with his classmates at Okazaki Josai High School - Tetsuya, Shibayu, Ryo, and Yumemaru - as well as Mushimegane, a senior colleague at Tetsuya's part-time job. Until 2017, while still active with Tokai On Air, he was also active in music as the vocalist for the rock band Characteric Note.
In addition to his activities with Tokai On Air, he currently runs his own YouTube channel, "Toshimitsu Tokai On Air" (with approximately 710,000 subscribers as of November 2024), which has achieved a total of over 7271 million views. Toshimitsu, who was a member of the baseball club in high school and continued to join sports clubs after entering university, loves to exercise and is well-liked by fans as a cute and approachable person.
On the other hand, she is known for her deep knowledge of fashion, and on her official Instagram account she often shows off her mix of vintage denim, secondhand clothing, and street fashion.
This Instagram coordination also stands out with its casual combination of vintage clothing and a gold Cartier watch. In the post, he wrote, "I just love Cartier. I keep telling my friends that everyone should buy one. It somehow fits the vibe of vintage clothing." It is clear that he considers watches an important part of fashion.
My favorite watch is the Cartier Tank Louis Cartier.
Toshimitsu says that watches are a man's romance and a motivation in life, and the first luxury watch he purchased was a Patek Philippe chronograph, Ref. 5170R. At the age of 25, he purchased the Patek Philippe he had been longing for since high school, at the Hourglass Ginza store with Hikakin and others. He says he has no regrets about choosing a top-tier brand from the start.
Since then, as his collection of watches has grown, he has stored them in watch cases he purchased on Amazon, but after purchasing a watch trunk made by Louis Vuitton, he started posting videos on his personal channel talking about his love of watches.
He currently owns eight watches, and says there are other models he would like to own.
In the video, which shows his love for watches, Toshimitsu strongly recommends Cartier, calling it his "favorite watch" and "the best, it's so good." The watch he is wearing on Instagram is the Tank Louis Cartier Ref. WGTA0011, and Toshimitsu says, "The Tank is a watch you can wear for a lifetime, and it becomes more attractive with age. I also own the Santos de Cartier Ref. WSSA0061, but the next Cartier I want is also the all-green Tank."
Last year, to celebrate his 10th anniversary as a YouTuber, he purchased a Patek Philippe complication model, Ref. 5205R. He also has an impressive collection of other green dial watches, including a Rolex Submariner Date, Ref. 116610LV, and an IWC Pilot's Watch Chronograph Spitfire, Ref. 387902.
Of course, there is a reason why Toshimitsu is so particular about green. It is because green is the member color of Tokai On Air. However, while his initial passion was a color that represented his own identity, he now seems to be fascinated by the depth of the green dials produced by luxury brands.
A timeless masterpiece from Cartier, embodied in Art Deco aesthetics
The Tank Louis Cartier, worn by Louis Cartier himself, is the origin of the Tank series. With its rectangular shape, bold lines on both sides of the case, blued steel sword-shaped hands, and rounded corners on the lugs, it exudes the elegant atmosphere of a jeweler while still featuring a tank motif. The design, which pioneered the Art Deco style, remains timeless and beloved by many people today.
This model is equipped with the hand-wound movement Cal. 1917 MC and is housed in a pink gold case. Its small size of 33.7mm x 25.5mm makes it stand out, and when combined with the semi-matt brown alligator strap, it exudes elegance.
When choosing a watch, Toshimitsu places importance on how he feels at the time and whether it reflects his personality, rather than on what is popular with the general public. Looking at his collection lined up in a Louis Vuitton trunk, he exclaims, "They're so beautiful! My watches! They're so cool!", expressing a joy that any watch enthusiast can relate to.
"It's not about the price, it's the memories I have. It's filled with the feelings that made me buy it," he says passionately, and we look forward to continuing to pay attention to Toshimitsu's attachment to his watches.

The accentuated case side resembles a tank's tracks. Its powerful impression is a timeless Cartier standard. Manual winding (Cal. 1917MC). 19 jewels. 21,600 vph. 18KPG case (33.7mm x 25.5mm, 6.6mm thick). Water resistant for everyday use. 2,059,200 yen (tax included).



