Masaaki Yamada's series started in 1956 and closed its circle in 1995. It has been "work = work" for 40 years. The titles of the works are mechanically numbered with alphabets and serial numbers that represent the ages, such as Work B in the 1950s and Work C in the 1960s, and continued until Work F in the 1990s. is a "combination of accumulation and time" (in 1995, Masaaki Yamada's words) for the painting itself to recover from the ruins and become autonomous. It was literally a long battle. In order to create Yamada's own "painting", it was a long way to discover himself and save what he should save by dismantling the painting and continuing to draw. Each piece of work is a process, and it emphasized the "chain" that draw one after another. The object to be drawn goes through "demolition" in the early series, then goes to "construction" at once, and develops from a repeating surface to a stripe that is a repeating line. Yamada was the first in the world to create a painting with repeating lines-stripes. Yamada consistently pursued the possibilities of painting in his own way after the war and established one of the goals of abstract painting. Today, Japanese abstract painters are so famous that they are the first to be named. In 2016-2017, the large-scale retrospective exhibition "endless Masaaki Yamada's paintings", which was held at the National Museum of Modern Art, Tokyo, was highly acclaimed in Japan and abroad.