SUN G.K.

A small light,
growing day by day.

SUN G.K. is a small family company in Matsuyama, Japan. Like the sun after the winter solstice, we grow our light little by little.

Our business →

Business

What we do

All business →
Main business

English education

Apps and books for Japanese learners who find English hard — so learning keeps going because it's fun.

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Coming soon

Apparel — UKIYO HOTARU

Clothing that carries the quiet beauty of Japan, for customers around the world.

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Coming soon

Music — Lumistice Music

Songs by our artist and soundtracks for apps and games.

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About

About SUN G.K.

Founded in November 2026 by a family of three in Matsuyama, Ehime, Japan.

SUN G.K. logo

Contact

For questions about our business or products, please email us.

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This English site is a summary. The main site is in Japanese.