"Grease" (기름때) is a song by Jonghyun, a South Korean singer-songwriter and member of the boy band SHINee. The song is included in his second compilation album, "The Collection: Story Op.2," released in 2017. The lyrics of "Grease" talk about longing to clean up and fix a relationship that has become messy and tainted. The song expresses the desire to forget and let go of past memories and mistakes. Jonghyun reflects on his own faults and regrets, acknowledging that he didn't realize his mistakes at the time. He wants to erase the memories and move on, hoping to find redemption and healing. The song carries a sense of self-reflection and a plea for forgiveness. Jonghyun acknowledges the pain and damage caused but hopes for a chance to start anew. The lyrics highlight the importance of personal growth and the need to let go of negative memories and emotions in order to move forward. Overall, "Grease" portrays a heartfelt confession of remorse and a longing for reconciliation and healing. Jonghyun's emotional vocals combined with the introspective lyrics create a poignant and introspective atmosphere in the song.