It has been published in light novel, manga, and drama cd forms. The novel depicts * 2036/08/13 19:46 1.129848% * 2010/03/28 23:18 1.130426% * 2010/08/15 15:35 1.130205% * 2010/08/17 21:53 1.130205% * And 2010/11 most likely in 1.130205% The manga adaptation depicts * 2036/08/13 19:46 1.129848% * And 2010/11 most likely in 1.130205% The title refers to the "closed timelike curve (CTC)" in mathematical physics.