Affection is the debut studio album by Japanese pop and R&B singer Koda Kumi. It was released on March 27, 2002. It has been her only album to not chart in the Top 10, debuting at No. 12 on Oricon and staying on the charts for six weeks, making it her lowest-charting studio album. During its run, it had only sold 91,360 copies. The limited editions of the album contained remixes for "Take Back" and "Trust Your Love", which had previously been released on her North American release of the singles.

This album carries her most famous ballad, "walk," which, starting from her first tour, Secret ~First Class Limited Live~ (2005), she has performed at every concert. It also contained her first collaboration attempt, "Till Morning Comes," which featured Japanese rapper VERBAL, who is part of the hip-hop duo m-flo.