This is the deck I used to beat Afterlife-Messenger (God Boss in The Sun and The Moon story arc; see Chapter 3, before Quest 7). This deck has 354K of force. The Stone-Tower slabs are fully unlocked for the three of them. The Cursed-God slabs are fully unlocked for Akeha and Yurie. Griff's Cursed-God slabs are just half-way done.
Use Griff's provoker wisely. Make sure you activate Griff's provoke state right before the boss fulfills the skill gauge. Catch the best timing!

Defeat Afterlife-Messenger

Spirit: Fluss

Ch.1: Shimmering Flames

Ch.2: Invisible Bullet

Ch. 3: Reflections of A Fool

Ch. 4: Midnight Star

The Soldier's Crimes

A Letter to a Boy Soldier

Promotion Proposal

Fifty Years Post-War

Confidential Recording

A Letter from a Hero

Griff

<align="center">I wanted to see you.</align>\n\n<align="center">I thought I would never have to turn back.</align>\n\n<align="center">I screamed, fearing the approach of dawn,</align>\n<align="center">but could not escape the midnight sun.</align>\n\n<align="center">I looked away from the brilliant future,</align>\n<align="center">choosing a shadowed path no other can see.</align>\n\n<align="center">I prayed this place might be my eternal hell,</align>\n<align="center">so the fear I felt that day could be with me always.</align>

Bloody Captain

Debris: Toughness Clump

Prey

Roaming

Meetings

Synthetic Exorcism

Treason's Reward IV

Blackhorn Loathing

Tome: Cause & Malice

Ch.1: Life

Ch.2: Orders

Ch. 3: Fate

Ch. 4: The End

Regret

The Regular

Indigo

The Poison from the Cure

Stupor

The Beautiful Scarlet Devil

Akeha

Justice\n\n"What is justice to you?"\n\nShe would ask me, of all people? Me, the one who kills as ordered.\nRegardless, she looks at me most earnestly and says,\n"We both fight for our masters. I would like to hear your thoughts."\n\n"If justice exists," I reply, "it is not my place to name it.\nStill, perhaps fighting for another against evil is justice?"\n\n"I see. Thank you. I think I understand you better now."

Fabled Assassin

Debris: Ambush Chunk

Penumbra's Scar

Blackhorn Atrocity

Pure Lotus IV

Bear: Sadie

Ch. 1: Compare

Ch. 2: Migration

Ch. 3: Overwrite

Ch. 4: Option

Contempt

◤MY ASSISTANT◢

◤THE POPULACE◢

The Researcher

◤THE SINGER◢

Yurie

Of no account is the powerless hand that grasps nothing\nFor thick curtains of night hide my wounds\nFor the tapir has no right to dreams of its own\nEver isolated, the hologram floats in the dark\nRelentlessly searching for my soul

NieR Re[in]
Guide

Defeat Afterlife-Messenger

Character

Weapons

Companion

Debris

Memoirs

Character

Weapons

Companion

Debris

Memoirs

Character

Weapons

Companion

Debris

Memoirs