Seitousha

Seitousha is a Tokyo‑based stationery and lifestyle brand founded in 2009 by artist Sei Yamamoto. True to its name—meaning “Starlight Company”—Seitousha creates pieces that quietly brighten everyday life. Their designs blend traditional Japanese charm with a soft, modern sensibility. Each illustration is hand‑drawn and heartfelt, often inspired by nature, embroidery, seasonal scenery, and the small, poetic moments of daily living.