Building intuitive solutions
One app at a time
We build essential apps that feels like a quite superpower you reach for every day, because they simply work.
Founded
August, 2025
Latest HQ
Shibuya, Tokyo
Products Launched
3
Snapshot at a glance
We keep our footprint light and our focus sharp. Small team, meaningful releases, and a mindset that scales through thoughtful systems.
Company Name
Aterui Tech Inc.
Capital
510,000 JPY
Team Members
3
Focus
SaaS & AiaaS
Board of Directors
President & CEO
Asuka Onishi
Representative Director
Harihara Sudhan Kumar
Director
Keshav Singh
Core philosophy
Be intuitive and productive, without extra fluff.
We protect the calm in the process.
Every product is designed to be understood at a glance, run without heroics, and quietly power the people who rely on it.
Our Journey so far
Oct – Nov 2023
Born at Tohoku University
Started with a idea of building simple intuitive application while sipping sake in a Izakaya.
July 2024
CSpace, Our 1st project
Honoured at SPARK! TOHOKU and the University Business Idea Contest, collecting the EO North Japan, NTT Data, and Audience awards back-to-back.
October 2024
Mentored & validated
Shortlisted for NTT Data mentorship while gathering feedback from professors and early adopters to refine the roadmap.
Aug 2025
From one to many
Won the Essex Graduate Entrepreneurship Programme pitch (£1,500) and incorporated as Aterui Tech Inc., ready to scale calm, intentional software.
What we value
Simplicity First
Every screen earns its place. If it doesn’t help a task, it doesn’t ship.
Impact Over Features
We care about habits formed, hours saved, and teams delighted—not checklists.
Collaborative Motion
We build in tight loops with customers and teammates at the table from day zero.
Meet the team
Asuka Onishi
President & CEO
Harihara Sudhan Kumar
Representative Director
Keshav Singh
Director