The Legend of Heroes: Trails of Cold Steel II: Rean Schwarzer & Altina Orion (Nightmare)
Channel: Mr. Fry
Date: 20/07/2020

Difficulty: NG+ Nightmare

NG+ Bonuses: N/A

Black-Haired Boy (Rean Schwarzer)
Level: 135
HP: 263736

Black-Clad Girl (Altina Orion)
Level: 135
HP: 261488

Moveset:
Rean Schwarzer:
Regular attack
Gale EX: Medium AOE that has Seal proc
True Autumn Leaf Cutter: Small AOE that can delay
True Arc Slash: Line AOE that can delay
Termination Slash - Dawn (S-craft): All-hitting AOE

Altina Orion:
Regular attack
Brionac: Line AOE that inflicts DEF/ADF-Down
Black Barrier: Forms barrier that reflects one physical attack
Ragna Bringer (S-craft): All-hitting AOE

Party: Lloyd, Rixia

Rean and Altina aren't particularly threatening. Use Rixia's Falling Moon to inflict Faint on both targets (and delay them a bit) so they can't attack. Complement this with Lloyd's Brave Smash (Burning Heart helps with Lloyd getting frequent turns) to Seal them (and delay them a bit) so even when not fainted they can't attack. Be careful if Rean gets a turn because Gale EX can Seal both party members (which is bad because then you can't use Brave Smash/Falling Moon). Both of their S-crafts are fatal so avoid them at all costs (Adamantine Shield or defeat them before they get a turn to do so).