Rosario + Vampire: Rosario + Vampire Capu2

Season overview

Target: Rosario + Vampire Season 2.
Constraints: Use only provided SYNOPSIS and SOURCES.
Output format: Valid JSON only.
JSON keys: overview (160-220 words), primer (array of exactly 4 concise bullet points).
Style: Meticulous archivist, neutral, encyclopedic, plain text, no markdown, no asterisks, no headings, no bullet points.
TMDB Synopsis: Tsukune is a slacker in the human world but an A+ high school heartthrob in the monster realm. He deals with hot demon girls. Moka's bratty little sister poses a threat to their relationship. She enjoys his pain and wants to replace Moka's sweet side.
Source [1]: Mentions "An ordinary high school boy fails to get into any private academy except one — which happe".
Source [3]: Tsukune Aono is a boy who inadvertently enrolls in a boarding school for monsters.
Source [4]: Cast names (Todd Haberkorn, Ian Sinclair, Colleen Clinkenbeard).
Overview:
The narrative follows Tsukune Aono, a boy who inadvertently enrolls in a boarding school for monsters. While he is considered a slacker in the human world, he achieves the status of an A+ high school heartthrob within the monster realm. Tsukune must navigate his life while keeping up with a group of demon girls. The stability of his relationships is threatened by the arrival of Moka's bratty little sister. This character seeks to disrupt the existing dynamic between Tsukune and Moka. She finds pleasure in Tsukune's pain and aims to eliminate Moka's sweet side. The season focuses on the tension created by this sibling, as her presence threatens to burst the love bubble surrounding Tsukune and Moka. Tsukune's ability to maintain his connections with the demon girls is tested by this new development. The central conflict involves the potential loss of Moka's sweet personality due to the influence and desires of her younger sister.
Word Count Check (Overview):
"The narrative follows Tsukune Aono, a boy who inadvertently enrolls in a boarding school for monsters. While he is considered a slacker in the human world, he achieves the status of an A+ high school heartthrob within the monster realm. Tsukune must navigate his life while keeping up with a group of demon girls. The stability of his relationships is threatened by the arrival of Moka's bratty little sister. This character seeks to disrupt the existing dynamic between Tsukune and Moka. She finds pleasure in Tsukune's pain and aims