Connecting the World
Communication, staffing, and lifestyle solutions that bridge cultures and empower global living in Japan.
Mobile Business
New contracts, MNP port-ins, and device upgrades handled in your language. One visit, everything done.
Line Business
Light broadband setup for home and office. We manage contracts and installation end-to-end — no Japanese skills required.
Staffing Agency
We connect multilingual talent with top employers in telecom, retail, and services across Japan. Candidates fluent in 5+ languages, ready to work.
Real Estate
Securing an apartment in Japan as a foreigner is complex. We guide international residents and students through the full rental process in their language.
LifeLine Business
Electricity and gas set up fast for newcomers to Japan. We handle paperwork and support essential utility connections in your native language from day one.
Web Production
Corporate websites, e-commerce, and brand design built for businesses in Japan and beyond. We deliver polished digital products on time, on budget.
Corporate Solutions
Custom telecom bundles, multi-line contracts, and marketing strategies for corporate clients. We scale your communication infrastructure across Japan.
Start with a free consultation. No paperwork, no Japanese required.
THREE
ST01EPS
We guide you in every language — from choosing a plan to signing.
TOLIFE
IN JAPAN
Choose Your Plan
Browse SIM, staffing, and lifestyle packages. Our team walks you through every option in your native language — no guessing.
Consult With Us
Meet a Catien specialist. We handle all paperwork, registrations, and answer every question from start to finish.
Go Global
Start your life or business in Japan fully connected — with mobile, employment support, and ongoing multilingual assistance.
Building bridges between Japan and the world
At Catien, we are driven by a challenger spirit — delivering value beyond expectations through innovative communication solutions and multicultural expertise.
Our Offices
What our clients say
“Catien helped me switch to a SoftBank plan within one day. The staff spoke both Chinese and Japanese, so everything was crystal clear.”
Li Wei
International Student, Tokyo
“I found my apartment and set up gas and electricity all through Catien. Moving to Japan felt almost easy.”
Nguyen Minh
Software Engineer, Osaka
“The staffing team placed me in a telecom sales role within two weeks. Truly impressive network across Japan.”
Chen Xiao
Sales Associate, Fukuoka
“Catien helped me switch to a SoftBank plan within one day. The staff spoke both Chinese and Japanese, so everything was crystal clear.”
Li Wei
International Student, Tokyo
“I found my apartment and set up gas and electricity all through Catien. Moving to Japan felt almost easy.”
Nguyen Minh
Software Engineer, Osaka
“The staffing team placed me in a telecom sales role within two weeks. Truly impressive network across Japan.”
Chen Xiao
Sales Associate, Fukuoka
“As a foreigner, Japan's mobile carrier system was confusing. Catien guided me through MNP transfer from start to finish.”
David Trần
Marketing Lead, Nagoya
“Their web production team built our corporate site on time and on budget. The multilingual support was a huge bonus.”
Yuki Tanaka
Startup Founder, Tokyo
“Catien's LifeLine service saved us months of hassle getting electricity set up at our new office in Saitama.”
Park Junho
Office Manager, Saitama
“As a foreigner, Japan's mobile carrier system was confusing. Catien guided me through MNP transfer from start to finish.”
David Trần
Marketing Lead, Nagoya
“Their web production team built our corporate site on time and on budget. The multilingual support was a huge bonus.”
Yuki Tanaka
Startup Founder, Tokyo
“Catien's LifeLine service saved us months of hassle getting electricity set up at our new office in Saitama.”
Park Junho
Office Manager, Saitama
“Finally a company that understands both Vietnamese and Japanese culture. Made my life in Japan so much easier.”
Tran Thu Ha
Nurse, Yokohama
“The internet broadband setup through AU Hikari was seamless. Catien's team followed up until everything worked perfectly.”
Liang Fang
Graduate Researcher, Kyoto
“We hired five multilingual staff through Catien for our retail stores. Every candidate was well-prepared and professional.”
Akemi Yoshida
HR Director, Osaka
“Finally a company that understands both Vietnamese and Japanese culture. Made my life in Japan so much easier.”
Tran Thu Ha
Nurse, Yokohama
“The internet broadband setup through AU Hikari was seamless. Catien's team followed up until everything worked perfectly.”
Liang Fang
Graduate Researcher, Kyoto
“We hired five multilingual staff through Catien for our retail stores. Every candidate was well-prepared and professional.”
Akemi Yoshida
HR Director, Osaka
Let's talk
Our multilingual team is ready to help you with SIM, staffing, and life in Japan.