Interestingly, the game doesn’t count Alice’s substitute as a defensive buff (or it’s unremovable).

I checked the description and it says it can’t be removed.

You should probably add that the Alter Ego's NP is especially dangerous to the party, because it's AOE and removes defensive buffs before the attack. Taunters will not help, you need either Buff Removal Resist for main dps, kill her quickly, or sacrifice entire frontline.

Are the 90++ missions worth it? They drop a lot of resources, but it always takes me too long to beat them. What do you do? Do you do the 90+ ones or go for the 90++?

I'm sorry - I'm having a stroke reading this one. Is this an alternate timeline? Is the year 2015? The servant is new but the post reads like it was written over 10 years ago. Is this satire?

I'd love for you to continue making a guide for Ordeal Call III. I really enjoyed it!

Warning if you kill Berserker in Rare mushroom (step 90) too soon battle ends before you get to complete kill 50 mechanical mission

Yes, I encountered this too, I added a note in Step 90 to help warn against this. Thank you!

In the Event Completed block at the end of the walkthough, you didn't change the text and link from the previous Da Vinci Summer Event

Thanks for the catch! Should be fixed!