The right chronology would be: The 13th Grimm III {Vol. 1 (you are here)> Vol. 2 [W.I.P.] > Vol. 3 [N.R.Y.]} The 13th Grimm II {Ep. 1 [video]} The 13th Grimm IV {Ep. 1 [video] > Trivia > Ep. 2 [video]} The 13th Grimm V {The Masqueradeball} The 13th Grimm VI {Season 1 > Season 2 > Season 3 > Season 4} The 13th Grimm I {Ep. 1 [video]} The 13th Grimm VII {[N.R.Y.]}