"In Fact" is the 22nd single by Japanese boy band KAT-TUN, released in Japan on June 4, 2014, under the label J-One Records.

"In Fact" is the main theme song for TV drama series First Class starring Yuichi Nakamaru, which premieres April 19.

Sports & News" featuring Kamenashi Kazuya, and the image song for Nippon Television networks Professional Baseball broadcast "Dramatic Game 1844.

The Regular Edition (First Press) contains seven tracks, with My Secret", "Black" and "Dangerous" and original karaoke included.

The Limited Edition includes "In Fact" and "Believe In Myself" on CD, comes with a bonus DVD with a music video for the title song and its making-of.