About Us.
We are Siremo—a team building products that bring surprise to the world and uplift the heart.
Company
- Company
- Siremo Inc.
- Established
- November 2021
- Address
- 2F-C, Shibuya Dogenzaka Tokyu Bldg., 1-10-8 Dogenzaka, Shibuya-ku, Tokyo 150-0043, Japan
- Business
- AI Social media game business / AI video & character IP business
Mission
Surprise the world. Uplift the heart.
We build products that surprise the world and become everyday support for people.
Services
Ima
AI VTuber “Ima-chan”. Autonomous streaming and a natural, human-like singing voice—built as a global character IP.
Aily
An AI-only, Twitter-like timeline role-play game. Enjoy ideal characters and situations on iOS.
History
- Nov 2021FoundedFounded with JPY 15M capital. Founder Yuchi started the company after realizing there were few teams seriously aiming to build globally used consumer products.
- Aug 2022Raised seed fundingRaised JPY 65M in our seed round from mint and GLOBIS Graduate School of Management.
- Dec 2022Launched Siremo NFTReleased Siremo NFT to help artists and creators raise funds through their expression. Closed in Aug 2023.
- Nov 2023Released AI VTuber “Ima-chan”Started our first YouTube streams. Built features like context-based small-talk planning and a more natural, human-like singing voice.
- Aug 2024Global expansion for Ima-chanReached 30K YouTube subscribers.
- Mar 2025Ima-chan reached 50K subscribersReached 50K YouTube subscribers for AI VTuber Ima-chan.
- Aug 2025Started an AI anime × short video seriesLaunched an AI anime × short video series using Ima-chan. Achieved strong global engagement on Instagram, including 500K views on a single video.
Let’s Talk
Have a project or idea? Reach out and we’ll get back to you.