@kaminomikan Its kinda strange (and awesome), its in the same timeline and timeframe of the main series, but it focuses in the Loki family and their point of view of the story and also shows events that happened while they aren't present in the main story...
@nogenem I can't go into too much detail without spoilers but volume 7 of the main series and Sword take place simultaneously and Loki Familia was in no condition to be helping anyone at that time. The author actually said in the afterword of Sword v7 that he wanted to interweave the 2 stories but he couldn't make it work.