Arifureta: From Commonplace to World's Strongest: Season 1

Season overview

Topic: Arifureta: From Commonplace to World's Strongest Season 1.
Constraints: Use ONLY provided synopsis and sources. No invented facts. No markdown. No asterisks. No headings. No bullet points (except in the array). Output valid JSON only.
Output Format: JSON object with keys overview and primer.
overview requirements: Factual 160-220 word summary of the narrative arc.
primer requirements: Array of exactly 4 concise bullet points summarizing essential previous lore, character positions, and stakes.
Source [1]: Title, Year (2019), Rating (TV-14), Genres (Animation, Action & Adventure, Sci-Fi & Fantasy).
Source [2]: Creator (Shirakome Ryou), Cast (Toshinari Fukamachi, Yuuki Kuwahara, Matt Shipman, Tia Ballard). Plot: Hajime Nagumo and high-school classmates summoned to a fantastical land as heroes.
Source [4]: Plot: Hajime and classmates summoned as heroes. Most classmates have powerful stats/abilities, but Hajime does not. He is underappreciated and unprepared. He tumbles into the depths of a monster-infested dungeon. He must use voracity and sacrifice to thrive in this savage world and welcome the abyss.
Overview Draft:
Hajime Nagumo and his high-school classmates are suddenly summoned to a fantastical land to serve as heroes. While the majority of his classmates are endowed with powerful stats and abilities, Hajime lacks these advantages. Being underappreciated and unprepared for the challenges of this new world, Hajime tumbles into the depths of a monster-infested dungeon. To survive within this savage environment, he is forced to adopt a mindset of voracity and sacrifice. In order to thrive in such a dangerous setting, he must ultimately welcome the abyss. This 2019 animated series, categorized under action, adventure, sci-fi, and fantasy, follows Hajime's struggle to navigate the perils of the dungeon after his initial summoning. The narrative focuses on his transition from an underprepared student to someone forced to endure extreme conditions to stay alive. (Word count check: ~145 words. I need to expand to reach 160-220 words using only provided info).
Expanding Overview (strictly using provided info):
Hajime Nagumo and his high-school classmates are suddenly summoned to a fantastical land to serve as heroes. While the majority of his classmates are endowed with powerful stats and abilities, Hajime does not possess these same advantages. Because he is underappreciated and unprepared for the environment, Hajime tumbles into the depths of a monster