Despite these shifts in media for both Kogepan and Mamegoma, San-X is best known for Aki Kondo's Rilakkuma, the anthropomorphic teddy bear that was introduced via various stationary products in 2003.

With a collection of nearly 500 limited-edition plush toys worth hundreds of millions of Vietnamese dong, 30-year-old Bui Quynh Anh is not just preserving childhood memories but s ...