※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 |
|---|---|---|
| 驚くほど | 29 | 4.05 |
| 離す | 29 | 3.22 |
| 向き直る | 29 | 3.58 |
| 数え | 29 | 3.89 |
| 至近距離 | 29 | 4.02 |
| とかで | 29 | 3.66 |
| 比べる | 29 | 3.21 |
| 心の中 | 29 | 3.40 |
| 察知 | 30 | 3.27 |
| 二つ名 | 30 | 3.91 |
| 解決策 | 30 | 4.41 |
| 何時かは | 30 | 3.89 |
| 申し訳ありません | 30 | 3.44 |
| 要望 | 30 | 3.82 |
| 箱 | 30 | 3.37 |
| わけには行かない | 30 | 3.35 |
| 揃える | 30 | 3.93 |
| 金色 | 30 | 3.54 |
| 聞ける | 30 | 3.63 |
| 幾つも | 30 | 3.39 |
| 軌道 | 30 | 3.69 |
| 美味い | 30 | 3.39 |
| 跳び | 30 | 3.81 |
| に決まっている | 30 | 4.04 |
| 間違いなく | 30 | 3.12 |
| 気持ち | 30 | 2.61 |
| 髪 | 30 | 2.71 |
| ねー | 30 | 2.79 |
| 横目 | 30 | 3.67 |
| 無謀 | 30 | 3.84 |
| 口にする | 30 | 3.30 |
| 真面目 | 30 | 3.25 |
| に応じて | 30 | 3.95 |
| 本体 | 30 | 3.63 |
| 惣社 | 30 | 3.37 |
| 滑る | 30 | 3.72 |
| 悩む | 30 | 3.16 |
| 左手 | 30 | 3.25 |
| 行程 | 30 | 4.49 |
| 保有 | 30 | 3.92 |
| 出来るだけ | 30 | 3.38 |
| 急 | 30 | 3.79 |
| 死 | 30 | 3.03 |
| 募る | 30 | 3.96 |
| どちらも | 30 | 3.51 |
| 働き | 30 | 3.64 |
| 何れも | 30 | 3.39 |
| 直す | 30 | 3.51 |
| 相対する | 30 | 4.17 |
| たった一人 | 30 | 3.82 |
| ほんの | 30 | 3.64 |
| 反転 | 30 | 3.97 |
| 抗議 | 30 | 3.70 |
| ややこしい | 30 | 4.11 |
| 顔を出す | 30 | 3.97 |
| 無意味 | 30 | 3.75 |
| 絶望 | 30 | 3.38 |
| 真正面 | 30 | 3.80 |
| 人材 | 30 | 3.62 |
| 選別 | 30 | 4.19 |
| 仕舞う | 30 | 4.15 |
| おいて | 30 | 3.53 |
| これなら | 30 | 3.45 |
| 消す | 30 | 3.13 |
| 資金 | 30 | 3.71 |
| 剣士 | 30 | 3.37 |
| 天井 | 30 | 3.32 |
| 眼下 | 30 | 3.96 |
| 固い | 30 | 3.50 |
| 屑 | 30 | 4.22 |
| 打 | 30 | 4.12 |
| 狙撃 | 30 | 3.90 |
| 一回戦 | 30 | 4.60 |
| 看破 | 30 | 3.90 |
| 折れ | 30 | 3.68 |
| 円 | 30 | 3.34 |
| 診断 | 30 | 4.50 |
| 身動き | 30 | 3.87 |
| てか | 30 | 3.52 |
| 生産 | 30 | 3.50 |
| 引き出し | 30 | 4.02 |
| 例外 | 30 | 3.62 |
| 声を上げる | 30 | 3.56 |
| オウル | 30 | 5.02 |
| 救う | 30 | 3.16 |
| 戦争 | 30 | 3.00 |
| 不在 | 30 | 3.86 |
| 野うさぎ | 30 | 5.18 |
| 去る | 30 | 3.02 |
| 照準 | 30 | 4.30 |
| はっきり | 30 | 3.06 |
| 少数 | 30 | 3.90 |
| 投入 | 31 | 3.76 |
| 調理 | 31 | 3.65 |
| 何ら | 31 | 3.85 |
| 使い切る | 31 | 4.32 |
| 立ち | 31 | 3.49 |
| 直し | 31 | 3.54 |
| 日程 | 31 | 4.10 |
| 揺らす | 31 | 3.50 |
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