Kill This Love (stylized in all caps) is the second Korean-language extended play (third overall) by South Korean girl group Blackpink, released on April 5, 2019, by YG Entertainment and Interscope Records. It is their first Korean material since the release of Square Up in June 2018, and their debut release with Interscope Records. The title track was released as the lead single. The single peaked at number two in South Korea and became the group's first top-50 hit in the United States and the United Kingdom. On the Billboard 200 chart, Kill This Love debuted at number twenty four with 19,200 units, including over 9,100 pure sales moved. The EP reached the top ten in many territories, including Canada, Japan, New Zealand and South Korea, and the top twenty in Australia. It was certified platinum by the Gaon Music Chart in June 2019, for selling 250,000 album-equivalent units becoming Blackpink's second EP to do so, following 2018's Square Up.
The opening track, "Kill This Love" is a stomping, brassy electropop track with trap elements.The song contains "blaring horns and martial percussion", with Rosé and Jisoo leading the "impassioned" pre-choruses about breaking up. The second track, "Don't Know What To Do" is an EDM and pop song with throbbing bass, whistle-like hook and an acoustic guitar. "Kick It", the third song, is a song with elements of Southern trap, synth bass and acoustic guitar. The song is about telling past lovers: “I’m okay being alone / Don’t feel bad for me / I’m going to forget you now. The fourth track, "Hope Not", is a soft, acoustic pop-rock balladry about break-up where the person has moved on from yearning to acceptance.The closing track, "Ddu-Du Ddu-Du (remix)" was described as a "quivering, womping club-ready Remix".