Rock band KILLERS, led by Nahomi Matsushima of the owarai duo Othello, gave an unannounced live performance in Tokyo on Monday. During the performance, they declared that they are going to break up, with their final concert scheduled for March at the Nippon Budokan. The group barely debuted in August with the song "TROUBLE QUEEN," the first single by a female comedian to break the Oricon Top 20 in almost 15 years. As the explanation for their breakup, they joked, "We have short attention spans."