Bad Love is the first mini album by Key. It was released on September 27, 2021 with "Bad Love" serving as the album's title track. "Hate That..." was pre-released on August 30, 2021. The physical album comes in four versions: PhotoBook A, B, C (CD), and Tape (cassette).
I. Tracklist
| Title | Writer | Producer | Duration |
| Bad Love | KENZIE | KENZIE | 3:25 |
| Yellow Tape | Jo Yoon Kyung | IMLAY | 3:28 |
| Hate That... | Hwang Yoo Bin | Stephen Puth, Lauren Mandel, Eric Potapenko | 3:05 |
| Helium | Clarence Coffee Jr., Sophiya, Realmeee & E. Kidd Bogart | E. Kidd Bogart, Clarence Coffee Jr. & SLY | 3:20 |
| Saturday Night | KEY | Jacob Ubizz & Cutfather | 3:05 |
| Eighteen (End Of My World) | KEY | August Rigo | 3:46 |
II. Spotify
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III. Music Video
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IV. Behind the Scenes
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