The ninth stratum is a large-scale PvP event where players are divided into two opposing kingdoms! All the guilds are scheming about alliances and enemies, but naturally, everyone is interested in who Maple Tree will ally with. As Maple exchanges information with her rivals and receives invitations from competing guilds like the Order of the Holy Sword, she has a lot to consider... And yet, under such circumstances, she gets a special quest! To complete it, she'll have to use almost all her skills and drain her MP. How will she overcome the biggest crisis she's faced so far!?