2am released its new mini-album "Ballad 21 F/W" (Ballad 21 Autumn/Winter) on the 1st, followed by support from seniors and juniors who are active in various fields.

Park Jin-young, who presented the double title song "Goodbye," Kim Yeon-kyung, Rain, IU, TWICE, GOT7 BamBam, Red Velvet Seulgi, Monsta X Minhyuk, and AKMU Su-hyun quickly posted the release of 2am's new album on their SNS and added a brief remark. Actors Kim Yoo-jung, Kim Sae-ron, Choi Woo-sik, Yoon Park, Park Kyu-young, and Jung Hye-sung also helped support.

In particular, Park Jin-young asked for expectations for the reality-making film with an affectionate post saying, "Two am with a beautiful voice and heart." Kim Saeron said, "It's 2am, so you have to listen to it." Ballad crown prince appeared, Yoon Park said. "It's a collection of my favorite voices." IU captured and uploaded the music streaming screen of 2am's double title song "I didn't know because I was close" along with the fallen leaf emoticon.