Glory of Heracles (Nintendo Cinematic Universe)

Glory of Heracles is a Japanese graphic novel series.

Legend of the Fighting Demon's Lair
A young Heracles seeks to rescue Venus from captivity in Hades.

Titan's Downfall
Heracles is a legendary hero now and one of the Titans' offspring has declared himself to be the Prince of Darkness.

Silence of the Gods
Hero gains memory loss, but surprisingly becomes immortal. But he must regain his memory to save Greece again, even if it would cost him his immortality.

Legend of the Fighting Demon's Lair

 * Venus is kidnapped by Hades and his forces, imprisoning her in the underworld.
 * Heracles is tasked by Olympus to rescue Venus.
 * Hades also plans to cover all of Greece in darkness.
 * Heracles defeats Hades, rescuing Venus and saving Greece.

Titan's Downfall

 * Cronos attempts to control Greece.
 * Hero is chosen by Zeus to stop Cronos.
 * Heracles decides to join Hero on his journey.
 * Hero defeats Cronos and saves Greece.

Silence of the Gods

 * Hero awakens with no memory.
 * Hero falls into the hole leading to the underworld, but survives.
 * Monsters attack Greece.
 * Hearcles aids Hero again.
 * Hero defeats the leader of the monsters and regains his memories, but also loses his immortality.

Legend of the Fighting Demon's Lair

 * Based on Glory of Heracles: Legend of the Fighting Demon's Lair.

Titan's Downfall

 * Based on Glory of Heracles II: Titan's Downfall.

Silence of the Gods

 * Based on Glory of Heracles III: Silence of the Gods.