Saint Seiya: The Hades Chapter: Elysion

Season overview

Role: Meticulous television and film archivist.
Task: Create a JSON object for "Saint Seiya: The Hades Chapter" Season 4.
Keys: overview (160-220 words) and primer (array of exactly 4 bullet points).
Constraints: Use ONLY provided synopsis and sources. No invented facts. No markdown. No asterisks. No headings. No bullet points in the text (except the array format for the primer). Output valid JSON only.
Source Material:
Synopsis: 12 Gold Saints sacrifice lives to destroy Wailing Wall. Bronze Saints enter Elysion (deepest realm of Underworld). Face Hypnos and Thanatos (Twin Gods) before reaching Hades.
Source [1, 2, 3]: Hades plans to take over the world. Sends deceased Gold Saints to take Athena's head. Seiya and Bronze Saints help, but remaining Gold Saints don't appreciate it.
Goal: 160-220 words.
Facts available:
Hades plans to take over the world.
Hades sends deceased Gold Saints to take Athena's head.
Seiya and the Bronze Saints attempt to help.
Remaining Gold Saints do not appreciate the help of the Bronze Saints.
The 12 Gold Saints sacrifice their lives to destroy the Wailing Wall.
The Bronze Saints enter Elysion, the deepest realm of the Underworld.
In Elysion, they face the Twin Gods, Hypnos and Thanatos, who are Hades's two most powerful servants.
They must defeat these gods before they can reach Hades for the final battle.
Drafting (Mental):
Hades is planning to take over the world. To achieve this goal, he sends out deceased Gold Saints to take the head of Athena. Seiya and the other Bronze Saints come to help, though their assistance is not appreciated by the remaining Gold Saints that are still alive. Following the sacrifice of the 12 Gold Saints to destroy the Wailing Wall, the Bronze Saints enter the deepest realm of the Underworld, known as Elysion. Within this realm, the Bronze Saints must face off against the two most powerful servants of Hades, the Twin Gods Hypnos and Thanatos. This confrontation serves as a necessary obstacle that the Bronze Saints must overcome before they can finally reach Hades to engage in the final battle. The narrative follows the Bronze Saints as they navigate the dangers of the Underworld in their attempt to stop Hades's plan to take over the world and protect Athena.
Word Count Check:
"Hades is