When Sahashi Kei awoke, he found himself in an unfamiliar land—another world. Waking up embedded in the ground, Kei realizes that he must have fallen from the sky. The one who discovered him falling was a sister named Emily. After Kei saves her from goblins, he realizes that he possesses tremendous power. In fact, Kei was a cyborg developed as a pilot for a lunar exploration rocket. However, his body in this other world was now capable of outputting tens of times more power than before. This was because a Philosopher's Stone had been embedded in his body's core—his heart. As Kei continues to defeat magical beasts, he becomes involved in various incidents as an adventurer, including battles with giant magical beasts and conspiracies among the nobility.
| Word | Frequency | Difficulty |
|---|---|---|
| 品質 | 3 | 3.75 |
| 廃棄 | 3 | 4.43 |
| 北方 | 3 | 3.90 |
| 顔を上げる | 3 | 3.78 |
| 印象 | 3 | 3.24 |
| 防御力 | 3 | 3.62 |
| ブラックアウト | 3 | 5.13 |
| 履く | 3 | 3.90 |
| 面々 | 3 | 3.25 |
| 日間 | 3 | 3.78 |
| 寄付 | 3 | 4.30 |
| やり方 | 3 | 3.52 |
| 口止め | 3 | 4.42 |
| 最も | 3 | 3.10 |
| 単調 | 3 | 4.45 |
| 強気 | 3 | 4.16 |
| 異母 | 3 | 4.80 |
| 知れ渡る | 3 | 4.22 |
| 二本 | 3 | 3.56 |
| 食事を取る | 3 | 4.89 |
| 丸一日 | 3 | 4.40 |
| ゴタゴタ | 3 | 4.76 |
| 口止め料 | 3 | 5.20 |
| 色っぽい | 3 | 4.28 |
| 東西 | 3 | 4.31 |
| システム・ハッキング | 3 | 7.11 |
| 硬直 | 3 | 3.71 |
| その度 | 3 | 3.84 |
| 一反 | 3 | 3.87 |
| 賄賂 | 3 | 4.43 |
| 苦虫を噛み潰したよう | 3 | 4.57 |
| はあ | 3 | 3.26 |
| 模様 | 3 | 3.63 |
| 作り直す | 3 | 4.47 |
| 奥の手 | 3 | 4.28 |
| 真空 | 3 | 4.50 |
| ものだから | 3 | 3.61 |
| 偽り | 3 | 4.00 |
| 控える | 3 | 3.77 |
| 如何に | 3 | 3.55 |
| 反逆者 | 3 | 4.66 |
| からして | 3 | 3.45 |
| 側から | 3 | 3.82 |
| 胡散臭い | 3 | 4.11 |
| 境遇 | 3 | 4.09 |
| 一方通行 | 3 | 4.74 |
| 保持 | 3 | 4.11 |
| 茖葱 | 3 | 5.95 |
| 辛 | 3 | 4.07 |
| 法 | 3 | 3.21 |
| ころ | 3 | 3.59 |
| 問い詰める | 3 | 4.11 |
| 子の刻 | 3 | 6.66 |
| がね | 3 | 3.58 |
| 願う | 3 | 3.27 |
| 元通り | 3 | 4.17 |
| 手分け | 3 | 4.32 |
| 熱心 | 3 | 3.89 |
| ハック | 3 | 5.43 |
| 打ち倒す | 3 | 4.27 |
| 更なる | 3 | 3.63 |
| 静まりかえる | 3 | 4.70 |
| 低層 | 3 | 4.03 |
| 庭仕事 | 3 | 5.79 |
| ジャブ | 3 | 4.83 |
| お通り | 3 | 5.21 |
| 強大 | 3 | 3.66 |
| 飛び去る | 3 | 5.19 |
| 清書 | 3 | 5.34 |
| 見え見え | 3 | 4.79 |
| 相棒 | 3 | 3.81 |
| マッサージ | 3 | 4.34 |
| 伺い | 3 | 4.41 |
| 酷 | 3 | 4.12 |
| スクロール | 3 | 4.53 |
| 途切れ | 3 | 4.16 |
| 茶化す | 3 | 4.28 |
| 王様 | 3 | 3.37 |
| 竦める | 3 | 3.81 |
| 身支度 | 3 | 4.30 |
| 童男 | 3 | 3.91 |
| くるくる | 3 | 4.05 |
| 大混乱 | 3 | 4.47 |
| 元気づける | 3 | 4.95 |
| 大慌て | 3 | 4.50 |
| 明らめる | 3 | 4.81 |
| 亀甲縛り | 3 | 5.81 |
| 帝座 | 3 | 5.10 |
| 井戸 | 3 | 4.02 |
| 冷える | 3 | 3.95 |
| 幾世 | 3 | 4.37 |
| 円を描く | 3 | 4.68 |
| しろと言う | 3 | 4.32 |
| 女らしい | 3 | 4.41 |
| 科学者 | 3 | 4.65 |
| ウインドウ | 3 | 4.71 |
| ついて行く | 3 | 3.82 |
| P | 3 | 4.02 |
| 秘書 | 3 | 4.11 |
| 縮小 | 3 | 4.43 |
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