[3] On December 14, Antenna announced that Kyuhyun will release his first material with the agency with an EP titled Restart on January 9, 2024.

He also stated that he listened to the label's executives to avoid sounding too similar to his previous works.

[1] The opening track, "Restart" is a rock song that features the singer's exquisite and solid voice with hopeful lyrics, symbolizing the aura of a new beginning.

[6] "The Story Behind", the lead single of the EP falls under modern rock genre and was written by the label's founder, You Hee-yeol, and Humbler.

[6] "Was it Love" is a ballad track with minimalist arrangements of only vocals, piano, and strings, the lyrics themselves are about a calm confession.

[11] The EP reached a cumulative of 50,832 sales according to Circle Chart in South Korea on February.