Pre-order bonus is three days early access and deluxe edition comes with a bunch of extras. Phrasing makes it seem like deluxe edition may be pre-order or early release exclusive.

Pre-order bonus is the "Advanced Booster Bundle!" gets you Bracelet of Victory (equipment that boosts EXP gained), Complete Set of Training Beans (items used in character training) & Dark Emperor Kit

Pre-order bonus: Builder Pack

Pre-order bonus: "A set of 3 poses and 1 frame which can be used in photo mode." They say they "may" release the items later. it's KoeiTecmo though, so unlikely.

Pre-order bonus: "A set of 3 poses and 1 frame which can be used in photo mode." They say they "may" release the items later. it's KoeiTecmo though, so unlikely.

Pre-order bonus: "A set of 3 poses and 1 frame which can be used in photo mode." They say they "may" release the items later. it's KoeiTecmo though, so unlikely.

Game is a money scam utilizing copyrighted characters to sell FOMO Steam inventory items.

Pre-order bonus: Grace's Costume: Apocalypse

The developers themselves said about time-limited items: “The merchant Tomos, in Chapter 2 and beyond, will have them available for purchase on a rotating basis.” Well done, Moonless Formless!

Three items were exclusive to the pre-order period and exclusive items for participating in various betas. More items are tied to timed events.