Until the World apart or the White Flag Arrives 『BSD x MHA Crossover x Y/N 』
A Y/N story in a BSD and MHA crossover fanfic. It has both the infiltration plot and the field trip plot. Y/N Nakahara is suddenly called by Dazai for the first time in five years. She is told to go on a mission to Mustafa and infiltrate UA. In the background, the rest of the port Mafia seems to be preparing for somet...