For Treasure, who originally debuted with 12 members, there were very different plans at the beginning. YG Entertainment initially intended to promote the members together as TREASURE 13 but then split them into two separate groups. However, when trainee Ha Yoon Bin terminated his contract and YG Entertainment became involved in a scandal, the plans for the remaining 12 members changed. What was supposed to be two groups became one; TREASURE.

Even before their official debut, the company released a solo single by member Bang Yedam as a surprise for fans. YG chose the same promotional strategy they had used for the group BIGBANG. A new song would be released every month without much prior announcement, aiming to attract fans even before debut - and it worked.

Their first single album, The First Step: Chapter One, broke the record for the most copies sold in a week by a rookie group. Just one month later, on September 18, 2020, their first comeback was released with the single album The First Step: Chapter Two. The third single album, The First Step: Chapter Three, followed in the next month.

As if that weren’t enough, their first full album, The First Step: Treasure Effect, was released in January 2021.

Their web drama It's Okay, That's Friendship, which was released on YouTube in March, was extremely well received by fans and brought plenty of laughs.

In early 2022, they released another album, followed soon after by two more. The Second Step: Chapter One is their second Japanese album, which further expanded their fanbase in Japan.

The three-month hiatus of members Yedam and Mashiho caused concern and rumors among fans. The fear that the two might leave the group was sadly confirmed on November 8, 2022, when YG released a public statement. Mashiho left the group to focus on his health, while Yedam chose to pursue a path as a music producer.

Mashiho debuted as a solo artist in June 2024.