I don't really know coz the story in the novel is different, but going on travel with their band, singing in the restaurant, meeting Korean fans seems like chapter 81. But I don't really know, the timeline is so much off and I only read the free one on readhive ╮( ̄▽ ̄)╭
you can start reading from ch65 of the novel if ur curious after ch83 (im still reading so i cant provide spoilers)