Whatever the world we now live in, we know there are people who find irreplaceable beauty in it and genuinely wish to protect it. Their wish and existence are small, yet strong, and affect people around them little by little. Their love and the beliefs will be passed on to many people, and become a big wave that changes the world.

We, Hitoshizuku Inc., are the first PR agency in Japan specializing in social good & NPO’s, that supports people working with hitoshizuku (“a single drop,” in Japanese) – the thought that “we want to change the world for good.” Japan is now said to be “an advanced nation in social issues.” We address those social issues with various people in companies, NPOs, and citizens throughout the country.


Our Thoughts / Logo & Name

Our Logo:
The single drop will become
the great ocean.

The white represents each drop coming out to drop down. The blue represents each drop becoming waves in the great ocean.

There are earnest thoughts and attempts in the world, but many people don’t know those pure stories yet. We want to make them shine with our support.

Each one of the stories might be ephemeral. However, our belief is that each story will be a single drop – “Hitoshizuku” that changes the world.


Our Name:
We, “Hitoshizuku”
provide communications support
to “person” and “one”

We provide wide range of public relations and communications support to professional “person(Hito in Japanese)” and “companies (legal person)” who are earnestly addressing social issues.

To solve social problems, we think that “the conceptualization of the problems”, “the significance to you (your story)” and “the existence of a leader” are necessary – what the problems are, where they are, how they can be solved, what you have to do to solve them, and who you are working with. We start from having a honest conversation, knee to knee with you.

Then, we decide the approach and provide our assistance as a partner who looks in the same direction and solves problems together, walking side by side with the “person”.

There’s a tale called “Kurikindi, a Golden Bird” in Ecuadorian folklore. In it, a hummingbird flies back and forth, each time carrying single drop of water to put out a mountain fire. All the animals who ran away from the fire laugh at the hummingbird, saying, “Why are you doing that?”, but the hummingbird answers: “I am only doing what I can do”.

This story tells us that, however small, any “one” action or thought of those who make a move has a purpose, and that it is important to respect it. As a public relations agency for the social good and NPOs, we will provide proper support with care.


Staff Profile

Hiroshi Kokubo

Hitoshizuku Inc. President

After starting his career at an advertisement agency, he worked at a public relations agency, where he launched a team specialized in environment and CSR communication. After gaining additional experience from starting up a public relations team at a film production company’s promotion department and a company specializing in social business ventures, he started his own business. He identifies himself as “a PR conductor who supports people addressing social issues”. He works on building infrastructures for social good, advocating “invisible public relations” – PR that works to silently provide behind-the-scenes support for their clients.

Winner of International Marketing Excellence Award 2014: Gold Prize; The 12th JPM Planning Solution Award “Best Promotional Program Award”

Mami Kaneko

Public Relations Division, Public Relations Conductor

She launched a public relations team at an international youth environmental organization, “A SEED JAPAN” when she was in university, and started her career at a public relations agency after graduation. She has experienced public relations consulting, planning and holding press conferences at wide range of fields such as food and beverages, household goods, stationary, publishing, automobiles and financials. Within this time, she was sent to a PR department of an advertisement company to be in charge of their PR risk management. She have also worked for a TV station’s management department of a news program for overseas, and experienced back office support for news production team.

Nobuhiro Omori

Public Relations Division, Public Relations Conductor

In his four-year experience at a major public relations agency, he was in charge of a sporting goods manufacturer, consumer goods manufacturer, drug company, software company, local government (Toyama prefecture), golfing goods manufacturer, etc. His experience in media relations ranges from creating press releases to planning various events, supporting a wide range of public relations from BtoC, BtoB to internal communications. After that, he chose the next stage at a platform planning & management company whose main field was bookstores, and there, he was in charge of Internet and social media promotion, direct communications such as fliers & point-of-purchase tools, PR and branding. He also was the main administrator of a professional women’s golf-tournament sponsored by his company. After gaining further experience as a freelance consultant, he joined our team.

Takako Chiba

Creative Director

After graduating from university, she started working for a production company which specialized in print & digital media. As an editor/web content director for co-op’s PR, she developed and created agriculture & food-related contents for print media, digital, and mobile apps. In 2016, she became a freelancer and moved to the Irokawa Ward of Nachi-Katsuura, Wakayama, Japan and started her own firm and provided PR services for the area. She joined Hitoshizuku around the same time, and telecommutes. In 2017, she launched “iroilo”, baked sweets using local food. She runs a coffee & tea room “Rakuda-sha” since 2018.

Takaaki Suzuki

Workshop Design Partner

After working at a production team of job ads, he gained experience as class coordinator for Shibuya University Network. He then became a freelance facilitator and handled projects relating to domestic migration, multiple career fields and SDGs (sustainable development goals). He started his own business in April 2018, became President of Kazegumi Inc., and built a stronger partnership with Hitoshizuku as a workshop designer. He plans and promotes projects with various sectors. He provides support in multiple roles such as a co-leader of the Ibaraki Migration Project, the leader of “Bukatsudo / Omiyage club”, a staff of “Think the Earth,” and a partner of “Work Design Lab.”

NameHitoshizuku Inc.
Address3–33 Kitanakadori Naka-ku Yokohama-shi Kanagawa 231–0003 JAPAN
Phone81 45 550 4141
E-mailinfo@hitoshizuku.co.jp
PresidentHiroshi Kokubo
EstablishedMarch 2016
Capital3,000,000yen
BusinessAdvertising & Public Relations Agency
Planning & Produciton of Social Good Projects
LawyerJunna Tei / Yokohama First Law Office
Tax AdvisorSatoru Motokoide / Uniques Money Advisory
Labor and Social Security Attorney
Office Work Innovation