Crush's single "Ego (feat. Kim Manny)" released on November 14, 2023, is written by Crush and Kim Manny, and composed and arranged by Crush and haventseenyou. The song is released under P NATION.

The song expresses anger and frustration towards a lover's pride and self-centered attitude in a relationship. Crush sings "I hate you, I hate you, I hate you" in the song, expressing strong feelings towards the other person.

"Ego (feat. Kim Manny)" is a song that combines Crush's intense vocals and emotional lyrics, and received much love upon its release. The song ranked high on various music charts and resonated with many people.

Crush's year-end concert 'bCRUSHb HOUR' has been successfully held. The concert was filled with excitement and fun as guest performers such as Zico, Seong Si-kyung, and Dduddu appeared. Crush had a special year-end by decorating 2023 through this concert. In addition, Crush communicated with fans through this concert and created unforgettable memories.