This is a special DLC that is only available to those who preorder the Digital Deluxe Edition and contains the following contents:

■"The Caligula Effect 2" Collab Items
・2nd GHC Prez Outfit (Protagonist)
・Songstress's Helm (Vessel)
・Songstress's Armor (Vessel)
・Songstress's Greaves (Vessel)
■"Crystar" Collab Items
・Samoyed Outfit!? (Protagonist)
・Executor's Helm (Vessel)
・Executor's Armor (Vessel)
・Executor's Greaves (Vessel)

More details on the official game page of MONARK Preorder Bonus DLC ...