Jiro Nitta
Net worth: 17 M $ as of 2026-07-30
Net worth: 17 M $ as of 2026-07-30
Jiro Nitta is the founder of j-Group Holdings Corp., founded in 1997, and holds the title of Chairman since 2022.
The current job is Director at J-Project Corp.
(New) since 2016.
Former jobs include Director at j-medix Corp., Representative Director at J Bridal corp.
from 2002 to 2011, and Representative Director at Dear J KK.
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
J-GROUP HOLDINGS CORP. 17.88% | 2026-02-27 | 2,238,100 ( 17.88% ) | 17 M $ | 2026-07-30 |
| 2025-08-30 | 300 ( 100% ) | 2 302 $ | 2026-07-30 |
| Companies | Position | Start |
|---|---|---|
| J-GROUP HOLDINGS CORP. | Founder | 1997-03-02 |
J-Project Corp. (New) | Director/Board Member | 2016-02-29 |
| Companies | Position | End |
|---|---|---|
j-medix Corp.
j-medix Corp. j-medix Corp. is a Japanese health-focused company specializing in natural health foods, supplements, and beauty products designed to support daily wellness, diet, body care, and overall well-being. The company is based in Fukuoka, Japan. The company's product lines include Ayumi EX, a topical glucosamine gel cream series for joint health; Natural Matured Wild Grass Enzyme Series, enzyme supplements made from over 60 types of wild grasses, vegetables, and fruits; Biseno, an organic domestic hair care brand; and other health foods such as black soybean black vinegar capsules. The company emphasizes gentle, daily care with products crafted using carefully selected ingredients and traditional methods. The company operates an official online store with detailed product information, shopping guides, subscription plans, special campaigns, and customer support. | Director/Board Member | - |
Dear J KK | Director/Board Member | - |
J Bridal corp.
J Bridal corp. Part of j-Group Holdings Corp., J Bridal corp. is a Japanese company that operates a comprehensive website dedicated to addressing a wide range of love, marriage, and relationship concerns. The company is based in Nagoya, Japan. The platform offers informative articles and columns on topics such as infidelity detection and investigation, relationship repair, coping with partner addiction, stalking—including persistent messaging harassment via LINE—and strategies for maintaining healthy romantic relationships. The company provides practical advice, psychological insights, and legal awareness, and promotes the use of professional detective agencies for evidence gathering and legal navigation through its affiliated service "???????," which offers free, anonymous consultations and connects clients with vetted investigators nationwide at discounted rates. | Director/Board Member | - |
Active
Inactive
Listed companies
Private companies
1st degree connections
1st degree companies
Male
Female
Members of the board
Executives
| Private companies | 5 |
|---|---|
j-Group Holdings Corp.
j-Group Holdings Corp. RestaurantsConsumer Services Operates bar and restaurants & offers wedding restaurant services | Consumer Services |
j-medix Corp.
j-medix Corp. j-medix Corp. is a Japanese health-focused company specializing in natural health foods, supplements, and beauty products designed to support daily wellness, diet, body care, and overall well-being. The company is based in Fukuoka, Japan. The company's product lines include Ayumi EX, a topical glucosamine gel cream series for joint health; Natural Matured Wild Grass Enzyme Series, enzyme supplements made from over 60 types of wild grasses, vegetables, and fruits; Biseno, an organic domestic hair care brand; and other health foods such as black soybean black vinegar capsules. The company emphasizes gentle, daily care with products crafted using carefully selected ingredients and traditional methods. The company operates an official online store with detailed product information, shopping guides, subscription plans, special campaigns, and customer support. | |
J Bridal corp.
J Bridal corp. Part of j-Group Holdings Corp., J Bridal corp. is a Japanese company that operates a comprehensive website dedicated to addressing a wide range of love, marriage, and relationship concerns. The company is based in Nagoya, Japan. The platform offers informative articles and columns on topics such as infidelity detection and investigation, relationship repair, coping with partner addiction, stalking—including persistent messaging harassment via LINE—and strategies for maintaining healthy romantic relationships. The company provides practical advice, psychological insights, and legal awareness, and promotes the use of professional detective agencies for evidence gathering and legal navigation through its affiliated service "???????," which offers free, anonymous consultations and connects clients with vetted investigators nationwide at discounted rates. | |
Dear J KK | |
J-Project Corp. (New) |
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