Oh Seong Min, known as Seongmin, is a South Korean singer, dancer, former member of TO1 (티오원) and current member of ONE PACT (원팩트). He graduated from Cheoncheon High School and spent several years as a trainee at CUBE Entertainment, Stone Music Entertainment, Wakeone, and n.CH Entertainment. He participated in "World Klass", and as one of the top finishers, he made his debut with TO1 (originally known as TOO) in April 2020 (under the stage name Jerome) with their 1st mini album "Reason for Being: 仁 (Benevolence)". However, the group went into hiatus in May 2022, and one month later, Wakeone Entertainment announced that he and 2 other members decided to leave TO1 to pursue their personal goals. He switched agencies and re-debuted in November 2023 as the vocalist and visual of ONE PACT with their 1st mini-album "Moment". (Source: MyDramaList) Watch drama online for free.