LIFE
SPIRAL
UP

Connecting water, nurturing soil.

From yesterday to today, from today to tomorrow.
Building an infrastructure where abundance circulates,
starting from Miyakoda, Hamamatsu.

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DOMAINS

OUR 3 CORE BUSINESS FIELDS

EXPERTISE & INNOVATION

01

WATER & INFRASTRUCTURE

Water & Infrastructure

Water & Infrastructure

Toward next-generation infrastructure through safety, energy efficiency, and DX.
From plumbing and HVAC to 3D scanning for site surveys and smart agriculture, supporting the region with technology.

  • Plumbing Works
  • 3D Scanning
  • Smart Agriculture
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02

NATURE & FOOD

Nature & Food

Nature & Food

Delivering the blessings from rainwater and soil as food.
Visualizing the circulation of abundance through production at LENRI Farm, service at our restaurant, and R&D at FOOD LAB.

  • Renri Farm
  • Cafe and Restaurant LENRI
  • FOOD LAB
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03

HUMAN & COMMUNITY

Human & Community

Human & Community

Nurturing the foundation of people and society.
Creating a hub for multi-generational interaction and creation through nursery schools, training facilities, and the "Under the Renri Tree" nature coexistence site.

  • Childcare
  • Lodging & Training
  • Regional Clubs
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CASES

Concrete solutions born from facing on-site challenges.

3D SCANNING

3D SCANNING
TECHNOLOGY

Digitizing site surveys to reduce man-hours and improve accuracy.

SMART AGRI

SMART AGRI
AGRICULTURE

Converting idle facilities into production bases with IoT-controlled high-efficiency agriculture.

FOOD LAB

FOOD LAB
FOOD

Creating new value in food with local ingredients and chef expertise.

Corporate Training

Corporate Training
TRAINING

Team building in nature at Renri to Ishi no Ie.

Food Education

Food Education
EDUCATION

Experiential food education connecting nursery and farm.

Regional Marché

Regional Marché
EVENT

Creating a venue where local producers meet consumers.
OUR PHILOSOPHY

Creating a cycle of
happiness with our own hands.

Chef and Farmer

I-kan Corporation has expanded from its foundation in plumbing and infrastructure to food, agriculture, and education. Under our philosophy of "Life Spiral Up," we create a future where everyone's life rises like climbing a spiral staircase.

Toward a society filled with water and food, where abundance circulates. From infrastructure to farms, restaurants, nursery schools, and community. Beyond business boundaries, we create connections and spread a healthy upward current from Hamamatsu to the world.

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Vision
VISION

— What we aim for

Realizing a society filled with water and food,
where abundance circulates

Safe water and infrastructure, locally grown food, and human connections. We aim for a society where these circulate and everyone can feel prosperity.

MISSION

— What we do to achieve it

Connecting water, nurturing soil,
building tomorrow's infrastructure

Delivering water through plumbing, nurturing soil in our farms, serving food at our restaurant. We build the future through consistent value creation from infrastructure to the dining table.

OUR SYMBOL

A special tree that
symbolizes our philosophy

Renri Tree

Standing proudly at the center of our headquarters is the "Renri Tree" - an extremely rare phenomenon where two different species of trees have grown together, supporting each other, eventually uniting as one trunk. It was designated as a Hamamatsu City Natural Monument in 2024.

Diversity and unity enhancing each other — this Renri Tree embodies the ideal organization and community we aspire to create.

About Renri Tree →
Challenge Regional Issues

Solving Regional Issues is
Our Mission

Population decline, aging infrastructure, weakening communities. We provide solutions to regional challenges through a multifaceted approach including plumbing, dining, childcare, and agriculture, creating a sustainable future.

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Our Approach

4 Strategies

Four Pillars to Solve Regional Issues

01. Career

Career

Providing diverse work styles and career paths

02. Hub Function

Hub Function

Creating a base where people and information gather

03. Education

Education

Providing learning places to nurture the next generation

04. Life & Living

Life & Living

Proposing a rich and comfortable lifestyle

FUTURE PROJECT

Nurturing Regional Future
Regional Club Initiative

Regional Club Activity Image

Aiming to establish regional clubs to support the healthy growth of children through sports and cultural activities, anticipating the transition of club activities to the region.

Contact
MESSAGE

CEO Message

CEO Masayoshi Nakamura

We believe happiness is "building good relationships." Small achievements and joys of one person spread like ripples to colleagues, customers, and the community, elevating the energy of the entire organization and society. Creating this virtuous cycle through both business and place-making is I-kan's mission.

CEO Masayoshi Nakamura

View CEO Message →
HISTORY

Our Journey

1983

Founded Aikan Kogyo

2007

HQ Relocation & LENRI Opening

2021

Opened Licensed Nursery 'Renri no Ko'

2023

Renri Tree Certified as Regional Heritage

2025

Nature Coexistence Site Certification

View History →
CERTIFICATIONS

Certifications & Initiatives

Our activities recognized by society

Certified

Certified Health & Productivity Management 2024

METI Certified (SME Category)

Certified

Work-Life Balance Promotion Office

Hamamatsu City Certified

Award

Hamamatsu SDGs Contest Excellence Award

For nursery "Renri no Ko" initiatives

Declaration

Declaration of Partnership Building

Cabinet Office / SME Agency

Certified

Nature Coexistence Site Certification

Ministry of the Environment ('Under the Renri Tree')

COMMUNITY

Community Engagement

Creating Hamamatsu's Future Together

Hama Hub

Participating in Hamamatsu Industrial Promotion Network

CEO's Class

Supporting Next-Gen Career Education

Industry-Academia-Government

Collaboration with Regional Educational Institutions

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NEWS

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2025.12.17
Press Release

【浜松市 初】愛管株式会社の拠点が「自然共生サイト」に認定
2025.07.22
Event

TECH BEAT Shizuoka 2025に出展します
2025.07.09
Event

「ビジネスマッチングフェア in Hamamatsu 2025」出展のお知らせ
CONTACT

Contact

Please feel free to contact us

Plumbing Inquiries

Corporate & Individual Customers

Restaurant Reservations & Inquiries

Banquets, Private Rentals, Private Rooms

Training Facility Use

Corporate Training, Workation

Recruitment

New Graduates & Mid-Career