※This work has been novelized by Mag Garden※ Mikanaagi Rio is an ordinary 13-year-old boy who describes himself as average and unremarkable. To participate in his usual repetitive daily life, he steps out through his home's front door, but instead of the familiar gate, he finds himself in an endlessly white world. And waiting there is an arrogant ball of light that claims to be a god. The god's request is simple: "Please save this world that has reached a dead end." Rio is bewildered by this plea, which seems to have been directed at the wrong person. However, upon hearing the words "magic and monsters exist," he nods in agreement and heads toward his destination—the harsh otherworld of Sphere, where death flags flutter ominously at every turn. Yet the god who made this plea for salvation grants him no special powers whatsoever. He is given no information about the problems he must solve, with his only information being the unhelpful fact that he is "the weakest 13-year-old in the world." Bound by countless restrictions and constraints, a story of trial and error for survival begins.
| Word | Frequency | Difficulty |
|---|---|---|
| 財政危機 | 2 | 6.31 |
| 出来レース | 2 | 5.32 |
| 戦闘技術 | 2 | 4.68 |
| 画一的 | 2 | 5.54 |
| 重め | 2 | 5.47 |
| 覚める | 2 | 3.73 |
| いささか | 2 | 3.93 |
| 仕切り直す | 2 | 5.19 |
| 事が出来る | 2 | 3.66 |
| 出し巻 | 2 | 6.89 |
| 諭し | 2 | 4.86 |
| 刳り貫く | 2 | 5.79 |
| 人聞き | 2 | 5.01 |
| 野獣 | 2 | 4.51 |
| 見てもらう | 2 | 4.67 |
| 薬学 | 2 | 4.75 |
| それだから | 2 | 5.05 |
| 共同作業 | 2 | 5.05 |
| 正真正銘 | 2 | 4.26 |
| 平均値 | 2 | 5.17 |
| 地表 | 2 | 4.32 |
| 一礼 | 2 | 3.63 |
| 報告者 | 2 | 5.04 |
| 黒字 | 2 | 4.92 |
| 間一髪 | 2 | 4.50 |
| この頃 | 2 | 4.19 |
| 精確 | 2 | 5.25 |
| 辞さない | 2 | 4.92 |
| 指令 | 2 | 4.31 |
| 奇特 | 2 | 4.91 |
| 予定外 | 2 | 4.65 |
| 伊良 | 2 | 4.14 |
| お初 | 2 | 4.43 |
| ニート | 2 | 4.17 |
| お咎めなし | 2 | 5.41 |
| 一筋縄 | 2 | 4.92 |
| 代理人 | 2 | 4.57 |
| 降下 | 2 | 4.04 |
| 世界一 | 2 | 4.30 |
| 大人の事情 | 2 | 5.23 |
| 自惚れ | 2 | 4.72 |
| 樫 | 2 | 4.53 |
| 雀の涙 | 2 | 5.28 |
| 狂骨 | 2 | 5.50 |
| 指定校 | 2 | 4.61 |
| 縁を切る | 2 | 5.23 |
| 逆撫で | 2 | 4.91 |
| 裏付け | 2 | 4.56 |
| 見覚えがある | 2 | 4.32 |
| 自 | 2 | 4.12 |
| 死に物狂い | 2 | 4.66 |
| 会戦 | 2 | 4.54 |
| 楕円 | 2 | 5.08 |
| ジェネラル | 2 | 4.69 |
| なぞ | 2 | 4.17 |
| 追加料金 | 2 | 5.36 |
| この目で | 2 | 4.34 |
| 老兵 | 2 | 4.96 |
| 約半分 | 2 | 5.41 |
| 中性 | 2 | 4.53 |
| 参堂 | 2 | 5.34 |
| ブラックボックス | 2 | 5.26 |
| 悶々 | 2 | 4.65 |
| 汚らしい | 2 | 4.86 |
| 引かれる | 2 | 4.40 |
| 横並び | 2 | 4.94 |
| 無いものは無い | 2 | 6.04 |
| 競技 | 2 | 4.07 |
| フェンス | 2 | 4.93 |
| 名付け親 | 2 | 5.22 |
| 自然治癒力 | 2 | 5.45 |
| だらしない | 2 | 4.53 |
| 直る | 2 | 4.38 |
| 大目に見る | 2 | 5.63 |
| 通り抜ける | 2 | 4.27 |
| 期待値 | 2 | 5.32 |
| 力試し | 2 | 5.21 |
| 綻ぶ | 2 | 4.10 |
| 不法侵入 | 2 | 4.86 |
| 容認 | 2 | 4.59 |
| 生死の境 | 2 | 5.25 |
| 召喚状 | 2 | 5.53 |
| 放蕩 | 2 | 5.32 |
| 遠回し | 2 | 4.39 |
| 一見 | 2 | 3.66 |
| 幾通り | 2 | 5.77 |
| 優れもの | 2 | 4.83 |
| とは言うものの | 2 | 4.80 |
| 北西 | 2 | 4.27 |
| カプセル | 2 | 4.56 |
| 灯す | 2 | 4.19 |
| 公共施設 | 2 | 5.28 |
| 当該 | 2 | 5.05 |
| 掠め取る | 2 | 5.62 |
| 資金源 | 2 | 5.09 |
| 餞別 | 2 | 4.78 |
| 高級店 | 2 | 4.91 |
| 興 | 2 | 4.59 |
| 拍子抜け | 2 | 4.22 |
| どう言う | 2 | 4.53 |
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