Some critical points to start off:

• Omori has stated the main story completes within a year of Bell’s arrival,
• The One Eyed Black Dragon being defeated will likely be the climax but previously has fended off parties with multiple members level 8-9.
• Almost all adventurers of note have leveled up at least once since Bell arrived in Orario
• it typically takes much longer than a year for adventurers to level up so everyone is pretty much as good as they can get (Freya Familia TBD for this)
• Bell’s rapid growth from Realis Phrase presumably ends once he achieves parity with Aiz which suggests level 6-7 will be his end level.

Adding all that up it really looks to me like Orario doesn’t stand a chance against the OEBD unless at least a couple of the issues are addressed.

How do you think the story ends? And how do you think Omori gets there?