harisen battle fan

[MasterJoel]

yeah, so i fancy me a harrisen battle fan online. the guides aren't helping me... anyone know where i can find the board and the neta note? any help is much appreciated.

[Carbinne]

Do the first story mission by going to the Guardian Base at the 5th floor of the Guardian Colony. Beat up the Vol Brothers. Abandon, repeat.

[Krans]

yeah i just got dual harrisons from that, Carbinne does it drop every time or is it like a rare where it drops sometimes? is it usually single or always double?