U-US (유어스) was a three-member girl group under Erum Entertainment. Subin originally debuted solo under this name with the single "Love" on August 18, 2016. In 2018, after Subin released the OST, two members were added to U-US, making them a group. They presumably disbanded in 2019, without ever releasing music as a group. Subin has since gone solo again under Erum Entertainment.