[High Difficulty] Doki Doki Alter Club

Childhood Friend
Skills:
Battle Start: I Shall Lend You a hand: Increase ATK for Jeanne d'Arc (Alter). [Lasts until Arash is defeated]
Clairvoyance A: Increase own Critical Rate (3 turns).
Arrow Construction A: Increase own NP Gauge by 1. Recovers own HP by 3,000.
NP:
Stella: Heavy AoE damage. Inflict Death on self.

Skills:
Self-Modification EX: Increase ATK for all allies (3 turns) . Further increase ATK for all [Dragon] allies (3 turns).
Dragon Witch EX: Increase own Buster Card effectiveness (1 turn). Apply Invincible to self (1 turn). Decrease own HP by 1,000. [Demerit]
Ephemeral Dream A: Increase own Critical Strength (3 turns). Increase own Critical Rate (3 turns).

NP:
La Grondement Du Haine: Damage to a single target. Inflict Nullify Buff (1 time). Inflict Curse (500dmg/turn, 5 turns).

Upon 1st Break: Come, Let’s Have Some Fun: Decrease ATK for all enemies (5 turns).

Skills and NP are the same as pre-break.

Upon 2nd Break: More... More!: Decrease NP Gauge for all anemies by 30%.

Skills and NP are the same as pre-break.

Cool Upperclassman
Skills:
Battle Start: Shine for Me: Increase Critical Rate for Jeanne d'Arc (Alter). [Lasts until Arjuna is defeated]
Clairvoyance C+: Increase own Critical Rate (3 turns). Apply Debuff Immune to self (5 turns).
Hero of the Endowed A: Increase own NP Gauge by 1. Recover own HP by 1,700 each turn (5 turns). Increase own Critical Rate (5 turns).
Mana Burst (Flame) A: Increase own Buster Card effectiveness (1 turn). Increase own NP Strength (1 turn).
NP:
Pashupata: AoE Damage. Chance to inflict Death for all enemies. Additional chance to inflict Death on [Divine] enemies. Decrease DEF for all enemies.

Cool Upperclassman
Upon 1st Break: Shine Brightly for Me: Increase Critical Strength for Jeanne d'Arc (Alter). [Lasts until Arjuna is defeated]
Skills and NP are the same as pre-break.

Straightforward Friend
Skills:
Upon Entry (JAlter Alive): I Will Be of Help!: Increase own ATK (5 turns).
Upon Entry (Jalter Defeated): Where’s My Big Sister?: Increase own ATK. Increase own Critical Rate. [Unremovable]

Normal Skills:
Primordial Rune: Decrease NP Strength for a single enemy (1 turn). Decrease Critical Star Drop Rate for a single enemy (1 turn).
Hero's Assistant C: Increase Critical Rate of an ally (3 turn). Recover 2,400 HP for an ally.
NP:
Brynhild Romantia: Damage to a single enemy. Increase Critical Rate for all allies (3 turns). Deal extra damage to [Loved One] (Brynhild's Beloved) enemies.

Straightforward Friend
Upon Break (JAlter Alive): Big Sister, I'll Brush Your Hair: Remove Debuffs for Jeanne d'Arc (Alter).
Upon Break (Jalter Defeated): How Dare You Hurt My Big Sister!: Increase own Critical Rate. [Unremovable]
Skills and NP are the same as pre-break.