Message from the President

Corporate Introduction

Company Profile

Company Name	Ohtsu-kotosangen, Co., Ltd.
Address	5-29-2 Daizawa, Setagaya-ku, Tokyo
Phone Number	(81) 3-3412-4671
Fax	(81) 3-3412-4679
FAX	03-3412-4679
E-mail	info@okoto.jp
Official Web Site	https://www.okoto.jp/
Company Representative	Hirotsugu Ohtsu

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Company History

1891Meiji 24	The founder, Toranosuke Ohtsu, studied under Mr. Shigemoto who were called a “master craftsman of koto” living in Ueno, Tokyo.
1901Meiji 34	Toranosuke became independent from Mr. Shigemoto. He resided in Ushigome-ku, Tokyo (currently Ushigome, Shinjuku-ku, Tokyo) and started retail sales in addition to the main koto crafting. Then, his four sons started koto crafting one after another. The first son, Kiyoshi Ohtsu, started business in Ueno, Taito-ku, Tokyo (Negishi).
1938Showa13	Hiroshi Ohtsu, Toranosuke’s fourth son, took over and became the second president of the shop in Ushigome, Shinjuku-ku.
1943Showa18	Hiroshi and his family evacuated to the current Ohta City, Gunma Pref. to escape war damage.
1966Showa41	Hiroshi relocated the shop to Komaba, Meguro-ku, Tokyo.
1976Showa51	Relocated to Daizawa, Setagaya-ku, Tokyo (Shimokitazawa). The business was incorporated as a private limited company and named Ohtsu-kotosangen, Co., Ltd. Hiroshi’s second son (the third generation), Hirotsugu Ohtsu, became the president.
1992Heisei4	Hiroshi (the second generation) was certified as the traditional craftsman in Tokyo.
2004Heisei16	The company registered as a competitive bidding company of Tokyo.
2005Heisei17	The company launched website to provide information about kotos. The successor’s second son, Ryo Ohtsu, started participating business operations and continues to the present date.
2006Heisei18	The company acquired the antique dealer permit. Tokyo Metropolitan Public Safety Commission Permit No. 303260609232.
2007Heisei19	The company launched the recycle market.
2009Heisei21	Hirotsugu Ohtsu (the third generation) was certified as the traditional craftsman in Tokyo.

For more than 114 years since its establishment, our company has dedicated itself to kotos and shamisens.
We have been working toward the greater enhancement of the traditional craftsmanship that has been passed down from the founder, and currently, the third and forth generations are working hard together as the leaders.
Three years have passed since we launched the recycle market (buy/sell) in addition our sales and repair services of kotos and shamisens. We received great reputations and strongly felt deep interests in traditional Japanese musical instruments.
We will dedicate ourselves to offer our kotos and shamisens at reasonable prices so that the sounds of kotos and shamisens will reach to you and become more enjoyable musical instrument.
There are many things that need to be done to share greatness of traditional Japanese musical instruments and accelerate the market. As part of the project, we launched this website hoping to let more people know the “attractiveness of traditional Japanese musical instruments” and widen the market.
We continue to devote every managerial effort based on the concept to offer reliable products at reasonable prices and serve customers with great care.
We look forward to serving you and assisting you soon.