# With over 3,500 projects, DP Partners’ Site Hikkoshi-ya-san handles WordPress from migration to maintenance and recovery

- Company: DP Partners Co., Ltd.
- Industry: Web Development & Care
- Area: Tokyo (Nationwide, online)
- Representative: Kotaro Hikosaka (Representative Director, DP Partners)
- Website: https://dp-partners.co.jp/
- Published: 2026-11-08 / Updated: 2026-11-08
- URL: https://businesslife.music-japan.com/en/companies/dp-partners/

## What does DP Partners do?

DP Partners is a Tokyo company that runs Site Hikkoshi-ya-san, a WordPress migration and maintenance service. It handles server moves, domain changes and migrations to WordPress from other systems, and its maintenance plan includes 24/7 monitoring and recovery from off-site backups. Since launching in 2017 it has handled more than 3,500 projects.

Update notices you are afraid to click. A server you want to move but cannot, in case email stops working. DP Partners in Yoyogi, Tokyo, takes on exactly these jobs that site owners are scared to touch themselves.

## Key points

- Server moves, domain changes and migrations from Wix or free blogs to WordPress can all be handled in one request
- Maintenance includes 24/7 monitoring and recovery from backups stored separately on Amazon S3
- Over 3,500 projects since 2017 (as of May 2026), with more than 300 published cases and testimonials

## What they do

DP Partners specializes in WordPress migration and maintenance. Its founder, Kotaro Hikosaka, turned the website moves he struggled with while buying and selling his own sites into a service: Site Hikkoshi-ya-san, launched in January 2017.

It added WordPress maintenance in 2022 and moved backups to Amazon S3 in 2026. Its maintenance principle is that a site must always be recoverable: WordPress is never given delete permission, and backups are stored separately for each site.

## Problems they solve

| If you are facing | What they can do |
| --- | --- |
| WordPress and plugin updates have been pending for months | They apply updates for you, waiting until common issues settle before major releases |
| You want to move servers but fear email and domains will break | Site, email server, domain transfer and DNS are all moved together |
| Nobody knows where backups are or how recent they are | Backups are stored per site on Amazon S3, separate from the web server |
| Your site went down after a hack or a failed update | They restore the site from backups, and can also handle upgrades, theme changes and SSL |

## Services

- **WordPress migration**: Moves between hosting providers and domain changes; night and weekend work can be arranged (https://site-hikkoshi.com/)
- **Migration from other platforms**: From Wix, Jimdo, static HTML, free blog services or MovableType to WordPress
- **Email and domain**: Email server migration, domain transfers and DNS settings
- **WordPress maintenance**: 24/7 uptime monitoring, core and plugin updates, and server-side settings such as PHP and WAF
- **Backup and recovery**: Off-site backups on Amazon S3 and recovery when something breaks

## What sets them apart

1. **Nine years, 3,500+ projects**: More than 3,500 projects since January 2017 (as of May 2026), with over 100 partner companies.
2. **Maintenance built to recover**: Backups live on Amazon S3, separate from each site, and WordPress cannot delete them, so even a compromised site cannot wipe its own backups.
3. **Everything around the site, too**: Email, domains and DNS are handled along with the site, and the same team can look after it afterward.

## The founder: Kotaro Hikosaka

A graduate of Waseda University’s School of Sport Sciences, he managed the men’s softball team, which won the national university championship in his senior year.

He discovered the web through affiliate marketing as a student and has worked in SEO for about 15 years. After working at a web agency, he went independent in 2015, launched Site Hikkoshi-ya-san in 2017 and incorporated the same year.

In 2019 he presented the service to an entrepreneur community in Silicon Valley.

> A team of professionals with diversity (DP Partners’ corporate philosophy)

## A good fit for

- Companies whose web agency is hard to reach or whose maintenance scope is unclear
- Companies that need to leave an old server but have no one in-house to do it
- Companies moving from Wix or free blog platforms to WordPress

## Company profile

- Company: DP Partners Co., Ltd.
- Representative: Kotaro Hikosaka (彦坂 康太郎), Representative Director
- Established: November 1, 2015
- Incorporated: November 20, 2017
- Address: S-301 Tensho Yoyogi Bldg., 1-30-15 Yoyogi, Shibuya-ku, Tokyo
- Business: Planning and operating Site Hikkoshi-ya-san, a WordPress migration and maintenance service
- Trademarks: Site Hikkoshi-ya-san (Reg. No. 6193332 / 6193333)
- Corporate site: dp-partners.co.jp (https://dp-partners.co.jp/)
- Service site: site-hikkoshi.com (https://site-hikkoshi.com/)

## FAQ

### What can I ask Site Hikkoshi-ya-san to do?

WordPress server moves and domain changes, migrations to WordPress from Wix, Jimdo, HTML or free blogs, email migration, domain transfers and DNS settings. After the move, they can handle 24/7 monitoring, updates, backups and recovery.

### Where is DP Partners located?

In Yoyogi, Shibuya-ku, Tokyo. They work with clients nationwide online.

### How many projects have they handled?

According to the official website, more than 3,500 projects since 2017 (as of May 2026).

## Sources

Compiled by our editors from the official website and the company’s listings on our sister media. Interview content will be added after the interview.

- DP Partners official website: https://dp-partners.co.jp/
- Site Hikkoshi-ya-san official website: https://site-hikkoshi.com/
- Baton Partners | DP Partners: https://partners.music-japan.com/dp-partners/
- https://partners.music-japan.com/dp-partners/

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