"Sweat / Answer" is the 41st Japanese single by South Korean pop duo Tohoshinki, released on June 11, 2014 by Avex Trax.

[2] "Answer" was used as the theme song for the Japanese crime drama Hard Nut, which premiered on the satellite television channel NHK BS-Premium in October 2013.

[3] On April 22, 2014, the first day of Tohoshinki's seventh nationwide concert tour Tree: Live Tour 2014, a notice was put up on Tohoshinki's official website announcing the official release date of the new single.

[3] The duo included a performance of "Sweat" for the encore segment of their Tree Tour, which is expected to conclude on June 22, 2014 in Osaka.

[5] Debuting at number two on the daily Oricon Singles Chart, "Sweat / Answer" sold 78,053 copies on the first day of release.