The normal procedure in a BOSS raid should have a main tanker in defensive position taking the 'aggro' from the BOSS, a support player standing by to provide buffs and healing spells, and an attacker dealing massive amounts of damage in the shortest time possible, while avoiding taking too much damage to ease the pressure on the healers… yes, this was basically it.
But it was a pity that the world wouldn't ever go in accordance to one's wishes.
"Leader, can you attract the monsters' 'aggro' properly? Woahhhh, they're heading here already. Get lost!!"
The current scene was a prior indication that this party was about to be doomed in a BOSS raid due to their failure in coordination.