[1] As a painter he primarily uses traditional Japanese painting techniques; employing pigments derived from natural materials and applying them to a specially designed mulberry paper base.

[3] In contrast to the norm of displaying such works in a dimly lit, tatami matted room, Hiroshi prefers his paintings to be viewed under natural light.

Senju, watching the incident happened, immediately rushed for it and removed the coal tar with his bare hand.

[6] Senju’s waterfall was the first painting by an Asian artist to be awarded the Honorable Mention, for having “expressed the meditative world of nature and the fluctuations of Japan’s traditional culture.”[7] The Japan Hall commissioner was Junji Ito and the other exhibition artists were Yoichiro Kawaguchi, Zaigin Sai, and Katsuhiko Hibino.

[8][9] In 2007, Hiroshi Senju created a series of 20 fusuma (paper sliding door) paintings for the Shofuso Japanese House and Garden,[10] in Philadelphia, PA.

Asked to replace the destroyed fusuma paintings of Japanese National Treasure, artist Higashiyama Kaii, Senju said, "Shofuso offers a wonderful space for murals far exceeding my expectations, and I will do my best to paint murals symbolizing and important symbolic exchange between Japan and the United States.

[10] In donating the new murals, Senju honored Shōfusō in the ancient Japanese tradition of master painters offering their talents to the community.

[10] He also participated in the Art House Project in Naoshima, Kagawa[11] In 2015, Senju exhibited large-scale fluorescent pigment waterfalls Ryujin I and Ryujin II in a pitch-dark space, and natural pigment waterfall Suijin under daylight at Frontiers Reimagined, a collateral event of the Venice Biennale curated and organized by Sundaram Tagore Foundation.

[3] In 2015, it was officially confirmed that Senju would create a series of fusuma paintings for the head temple of Kongobuji of Koyasan, located on Mount Kōya, Wakayama, Japan.