To Hell
Deals damage to up to 5 enemy troops in a fan-shaped area. Damage taken by each enemy troop is reduced for every additional enemy troop hit.

Standard Ranged hero built around a fan-shaped rage AoE that turns circular on awakening, backed by garrison durability and fast rage regeneration.
Louis is a Standard Ranged hero centered on a multi-target rage skill that hits up to 5 enemy troops at once, dealing heavy damage that scales down slightly per additional target. His passives boost skill damage and Ranged Troop HP while garrisoned, add a flat Attack bonus to Ranged Troops, and grant bonus Rage on basic attacks to help him reach his rage skill faster.
His awakening upgrades his rage skill directly, increasing its damage and changing its hit pattern from a fan-shaped area to a circular one so it can catch more targets at once - making Louis a strong AoE-focused Ranged pick, especially in garrison defense.
Deals damage to up to 5 enemy troops in a fan-shaped area. Damage taken by each enemy troop is reduced for every additional enemy troop hit.
Increases skill damage. While stationed, increases HP of Ranged Troops.
Increases Ranged Troop Attack.
Troops gain additional Rage when using basic attacks.
Upgrades To Hell. Before activation, the skill deals damage to up to 5 enemy troops in a fan-shaped area (Damage Factor: 10000), with damage taken by each target reduced by 15% for every additional enemy target hit.
After activation, the damage factor increases to 12000, and the skill's hit area changes from a fan shape to a circular area, catching more targets.
Curtain Up
Curtain Up upgrades Louis's rage skill, To Hell, directly. Before awakening, the skill deals damage to up to 5 enemy troops in a fan-shaped area (Damage Factor: 10000), with damage taken by each target reduced by 15% for every additional enemy target hit.
After awakening, the damage factor increases to 12000, and the skill's hit area changes from a fan shape to a circular area, allowing it to catch more targets.

Explicitly named in Louis's own description text - Nakano Maaya's skill increases Louis's Attack and skill damage.
Known since childhood as a "gifted pianist," Louis was an uncompromising perfectionist who devoted himself obsessively to playing piano. Before the catastrophe, an outburst of rage injured his right hand, costing him his ability to play perfectly. In a desperate attempt to heal it, he decided to undergo a "Lazarus" therapy, having his entire hand amputated in hope of a full recovery. But just as the therapy was about to begin, the Zombie epidemic broke out. Though he survived the catastrophe, he lost his right arm completely, and his life has since become a spiral of darkness. He often suffers phantom pain and swallows every medication he can find, but nothing helps. His strange "placebo" came in the form of guns, blood and slaughter - the guns his piano, the fired bullets the melody, and the blood and mutilated limbs the red curtains on stage. Decimation is his only source of satisfaction, whether of Zombies or of humans.