OnlyOneOf, a group, has revealed its unique personality with unusual styling. The agency EightD Entertainment released a group teaser image of its new album "Seoul cCollectiOn (Seoul Collection)" on its official SNS at midnight on the 28th. Those who showed their charms in personal teasers gathered together. OnlyOneOf showed a sexy figure in a white see-through shirt in an open photo, or boasted a different visual with 'ash blue' and 'two-tone' hair color. OnlyOneOf is hinting about 'Seoul cCollectiOn' including music video teaser and highlight medley starting from unit image last month. In particular, the title song 'Seoul drift (Seoul drift)' has raised curiosity with its extraordinary speed and addictive melody from the beginning. OnlyOneOf successfully completed the "undergrOund idOl" project last year, offering music that breaks prejudice. Expectations are being amplified in what colors they will bring in 'Seoul cCollectiOn', which shows talents in various fields such as song, composition, arrangement and acting ability. On the other hand, OnlyOneOf announces 'Seoul cCollectiOn' on March 2, and the mini album 'Instinct Part. 2 (Instinct Part 2)'