Upcoming Walpergis having no event makes Hanafuda and Allen the perfect choice as banner characters as they'd not need to tie them to a mini-story.
Also, isn't Bamboo Hatted Kim non-Walpurgis
Genuinely, I would prefer they revert it to pre-nerf but actually change the Passive page to show the important Passives first (all those tips are based on that)
It's odd it shows the Fixed Panic and Panic Recovery Passives first.
People who struggle with 8-30:
1. Clash Unbreakable Glut skill last
2. Bind boss prior to the Unbreakable Wrath phase (it's every 3 turns)
3. Let only 1 Sinner clash and everyone else use Defense for that phase
4. Use defense for Sinner with Prey (or win clash if need EGO)
The 2nd point is important, because this is the reason the boss "nukes" your team. If not Binded, he gets 5 Slash Up.
3rd point is also important cuz unopposed attacks won't do extra damage if it hit.