All of his painting images that I could find on the Internet featured slender, beautiful young women. Clothing and settings were usually stylized and decorative. After a little thought, I decided that Mas was inspired by Gustav Klimt, in that decorative patterns or other elements such as peacock feathers form part of the background or setting. The decorative elements are not as extreme as Klimt's. And as noted below, often the women are wearing kimonos, and those kimonos feature floral and other patterns.
I keep repeating the word decorative, because that's what Mas' paintings essentially are. Viewers who prefer to find a story, psychological tension, or other dramatic content might be disappointed by Mas.