Stairway to Heaven: Season 1

Season overview

Role: Meticulous television and film archivist.
Task: Produce a JSON object for "Stairway to Heaven" 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 in the overview. Output valid JSON only.
Source Analysis:
Source [1]: Synopsis of "Stairway to Heaven". Childhood sweethearts Cha Song Ju and Han Jeong Seo. Jeong Seo's father remarries. New stepmother, stepbrother Han Tae Hwa (introverted), stepsister Han Yu Ri (scheming). Tae Hwa falls for Jeong Seo; Yu Ri pursues Song Ju. Song Ju goes to America. Jeong Seo hit by car, believed dead, loses memory. Tae Hwa takes her in, relocates her, gives her a new name. Five years later, Song Ju is about to engage Yu Ri and sees someone looking like Jeong Seo.
Source [2, 3, 4]: Metadata/Links.
Source [5]: Describes a different series "Stairway to Heaven (TV Series 2002)" about Keiichi Kashiwagi. I must ignore this as it refers to a different series/plot.
Drafting Overview:
The narrative follows the complicated relationship between childhood sweethearts Cha Song Ju and Han Jeong Seo. Their bond is tested when Jeong Seo's father remarries, introducing a new stepmother, an introverted stepbrother named Han Tae Hwa, and a scheming stepsister named Han Yu Ri. As the family dynamic shifts, Tae Hwa falls in love with the kind-hearted Jeong Seo, while Yu Ri attempts to pursue Song Ju. Despite Song Ju's departure to study in America, the connection between the two sweethearts remains strong. However, tragedy strikes on the night of Song Ju's return when Jeong Seo is mysteriously hit by a car and is believed to be dead. Following the accident, Jeong Seo suffers from memory loss and is taken in by Tae Hwa, who relocates her and provides her with a different name. Five years pass, and as Song Ju prepares for his engagement to Yu Ri, he encounters an individual who bears an exact resemblance to his lost love, Jeong Seo. This heartbreaking story explores the themes of fate and the enduring nature of love amidst familial complications and sudden tragedy.
Word Count Check:
"The narrative follows the complicated relationship between childhood sweethearts Cha Song Ju and Han Jeong Seo. Their bond is tested when Jeong Seo's father remarries, introducing a new stepmother, an introverted stepbrother named Han