Festival/Tokyo, which bills itself as "Japan's leading performing-arts event," is notable this year for its international collaborations — especially between Japanese and Korean dramatists, whose works comprise three of the 12 main programs in its Oct. 31-Dec. 6 span.

But as its subtitle of "Border Fusion" suggests, F/T 2015's sights are set on even wider horizons, with its brochure declaring: "Our lives are enclosed by many kinds of borders, including those of nationality, generation, values and experience. ... Yet, through the performing arts, F/T aspires to join with audiences in creating dialogue across borders."

Among those three Japan-Korea collaboration programs, which reflect a growing trend in Japan's contemporary theater world, one is the latest of many co-creations by prominent director Junnosuke Tada, founder of the Tokyo Deathlock theater company, and playwright Kiwoong Sung from the 12th Tongue Theatre Studio in Seoul.