A Flower Bookmark 2 consists of cover versions of nostalgic K-pop songs popularized from the 1960s to the 2000s, including "Autumn Morning" (Yang Hee-eun, 1991), "Last Night Story" (Sobangcha, 1988), "Sleepless Rainy Night" (Kim Gun-mo, 1990), "Secret Garden" (Lee Tzsche, 2003), "By the Stream" (Jeong Mi-jo, 1972) and "Everyday with You" (Deulgukhwa, 1980s).

However, due to the recent revelations surrounding his daughter's death, FAVE decided to remove the track from IU's album.

She shared, "As a loving fan of his music, I'd like to express my respect and memory to Kim Kwang-seok with this beautiful song sung with all my sincerity.

[13] Billboard's review of the album was positive, explaining that "IU's latest features six cover songs that takes the vocalist’s sound into bygone decades, delving into genres like folk and nu-disco to prove her worth as one of South Korea’s most formidable songstresses.

"[1] The 405 says that "isn't content to just mimic her childhood favorites, these are classic Korean songs completely re-imagined and recreated to into something undeniably 'IU'.