The group SF9, who released their first full-length album, has continued to show remarkable growth in records and music.

According to Hanter Chart, SF9’s first full-length album "FIRST COLLECTION" released on January 7 posted a total of 69,000 copies in its first tally of album sales that ended Jan. 13, topping the weekly chart. The figure is well over 50,000 copies of the previous "RPM" released in July last year, and is nearly 2.5 times higher than the initial sales of "RPM" in just a week. They have been building their fandom step by step for three months since their debut, showing explosive growth with their first full-length album, signaling the emergence of a new "Great Doll" in 2020.

SF9 also set their own best in the music chart. The title song ‘Good Guy’ entered the 58th melon real time chart, surpassed the previous ‘Enough’ 81st, and once rose to 33rd in the chart, proving their steep popularity. MV Hits, one of the measures of global popularity, has also been changed by achieving various performances, exceeding 10 million views in three days.

Meanwhile, SF9 has made a comeback with ‘Good Guy’ and is actively engaged in music activities. "Good Guy" is a song featuring luxurious sound making and harmonious and trendy styles, and is widely loved by the public for its high-end and understated appeal.