"Selfishness accelerates--" Pancake Cats, who have been developing genre-less music mainly in the doujin music scene, have completed an EP that is packed with "the music they want to make the most right now". Vocalists who are popular in a wide range of scenes, such as A-chi, Sakura Yuno, Dadaco, and Hizuki Rurufu, have gathered together. This time, each of the four members is in charge of writing the lyrics and composing the music. The four songs are full of each member's selfishness and are very diverse. The live recording sound by unique players is still alive and well in this work. In addition to the familiar Shiina Nao (Gt.), Mahio, and Yoshikawa Tatsuya (Ba.), Ihaken (Ba.), Mishima Ryo (Gt.), and huton (Gt.) have newly participated. The sound has evolved even further to become more diverse. The jacket design is new and is handled by illustrator Takayariku, who is popular for his original illustrations with pale colors and detailed character depictions. It adds a new color to the album, which is a departure from its conceptual line.