The Tree In Sunlight: Season 1

Season overview

Role: Meticulous television and film archivist.
Task: Create a JSON object for "The Tree In Sunlight" Season 1.
Keys: overview (160-220 words), primer (array of exactly 4 concise bullet points).
Constraints: Use ONLY provided synopsis and sources. No invented facts. No markdown. No asterisks. No headings. No bullet points (inside the overview, but the primer is an array). Output valid JSON only.
Content:
overview: Factual summary of the season's narrative arc.
primer: 4 concise bullet points summarizing essential previous lore, character positions, and stakes.
Title: The Tree In Sunlight.
Year: 2000.
Setting: Mid-1800s, specifically the Second Year of Ansei (1855) in Edo's Koishigawa.
Historical Context: Turbulent end of the Tokugawa Period (1600-1868 CE).
Characters:
Manjiro Ibutani: Low-ranking samurai, gifted swordsman, strong sense of justice, trying to live up to old traditions of his class and culture.
Ryoan Tezuka: Carefree attitude, eye for ladies, passionate about becoming a doctor, trained in Western-style medicine.
Relationship: Ryoan was Tezuka's great grandfather (Wait, source [2] says "the doctor, Ryo-an, was Tezuka's great grandfather". This phrasing is slightly confusing in the source, but I must stick to the text. It says "the doctor, Ryo-an, was Tezuka's great grandfather". Actually, looking closer at [2]: "The story is actually based upon real people - the doctor, Ryo-an, was Tezuka's great grandfather." This implies Ryoan is the doctor and he is the great grandfather of someone named Tezuka? Or is Ryoan Tezuka? The synopsis says "Ryoan Tezuka". I will treat Ryoan Tezuka as the character name).
Genre: Animation, Drama, War & Politics.
Cast: Koichi Yamadera, Mitsuru Miyamoto, Rica Matsumoto.
Origin: Adapted from a manga series.
Goal: 160-220 words.
Drafting:
Set during the Second Year of Ansei in 1855, The Tree In Sunlight follows the lives of two young men in Koishigawa, Edo. The narrative takes place against the backdrop of the