Board Thread:Event Official Threads/@comment-35182244-20160811085840/@comment-26464279-20160816024902

I didn't have a run where my LBAS recieved 0 damage but I still got the quest completion sound for the debuff after clearing the required nodes with an S rank.

However I had a few runs where my LBAS survived the raid without getting shouha and only recieving "scratch damage".

So it might actually be enough just not to get them damaged into Shouha.