Pajamas may sound like an unlikely creative catalyst for a business. For Sonya Park, however, it made perfect sense: She was determined to create a pair of comfortable, luxurious pajamas that she would want to wear herself.

It was in 2003 that former fashion stylist Park — who was born in Seoul, raised in Hawaii and now lives in Japan — opened her first Arts & Science store in Tokyo's Daikanyama district.

Initially selling vintage wear and antiques, she soon found herself working with a seamstress and fabric maker to create clothing that she yearned to wear herself — the first item being pajamas.