Lee Hi is back with a new love song!

On March 14 KST, the solo artist unveiled "That One Word," her new single for the NAVER webtoon 'Guide to Proper Romance.' The song is meant to be the theme song of female lead character Bareum, with lyrics written from the character's perspective as she reflects on the ups and downs of her love toward male lead Yuyeon.

To commemorate the release of the single, NAVER and Toon Studio have dropped a special lyrics video featuring various romantic scenes that evoke the song's mood.

Meanwhile, other artists on the soundtrack include XIA, Jukjae, Loco, Highlight's Yang Yoseob, 2F, 10CM, Huh Gak, KCM, Younha, George, LyN, and Apink's Eunji.

Check out the lyrics video for "That One Word" above!