FIFTY FIFTY has achieved success in the music industry by entering the top 100 of the US Billboard and UK Official Charts in record time. To promote their hit song "Cupid," advertisements were placed in New York's Times Square and Los Angeles, the two main centers of pop culture in the United States. The promotion, supported by YouTube headquarters, began on the 7th of April and will continue until April 13.

FIFTY FIFTY's achievement is remarkable because they are the first K-pop group to enter both the Billboard and UK official charts within four months of their debut. Their song "Cupid" was released in February and quickly gained international recognition. The group's agency stated that the advertisement videos appear every 12 minutes in Times Square and two other locations in New York.

Their success overseas has also increased their popularity in Korea. "Cupid" entered the Hot 100 chart at 96th, and it has climbed up to 79th place on April 10. The girls expressed gratitude and excitement for their accomplishments, stating through their agency that they will continue to work hard for their fans. They shared, "We're so happy to deliver good news to everyone and we're still surprised. We will continue to work hard to capture our energy and sincerity in our music with the heart of responsibility to repay this love."

Korean netizens are continuing to support the rookie girl group and commented, "Wow, this is so crazy," "I hope they continue this success," "I'm so happy they are doing so well," "They're like BTS. They're from a small company but are getting global popularity," "This is so amazing," "The song is super good. It deserves the success,"  "The song deserves the attention. It's so good," "I am amazed that they organically got this success through social media," "I thought this song would make it big," "Wow," "I hear their song so much on Tik Tok, I thought it was a pop song," and "This is so cool. Congrats."