Hisako Sekijima, JÅ«sanâyÅ no satsu (A Book with Thirteen Leaves), #553, 2009. Hisako Sekijima, Renzoku suru sen (Continuous Lines), #559, 2010. Hisako Sekijima, KÅzÅ o motsu ryÅ II (Volume That Has Structure II), #546, 2009. Installation photo by Richard Goodbody