Yamagishi Kyoji, a high school student helping with his family's convenience store in Okutama, suffers a serious injury one day due to the effects of "Erosion" inside the store. After being transported to a hospital where he is healed by magic, Kyoji is drawn to jump into the "Erosion's Mouth" and discovers a labyrinth beyond it. A dungeon that suddenly appears in the modern world. And from the Erosion's Mouth, magical essence "Mana" overflows, giving birth to magic users and a new profession called "Adventurer." Materials that drop from within the dungeon are utilized in modern science, creating new industries, and the world gradually comes to understand the "Adventurer" profession.
| Word | Frequency | Difficulty |
|---|---|---|
| ぼろぼろ | 3 | 4.26 |
| 買収 | 3 | 4.54 |
| 塗炭 | 3 | 4.44 |
| 寺院 | 3 | 4.51 |
| 騒ぎ | 3 | 3.37 |
| バッシング | 3 | 5.44 |
| 出来るようになる | 3 | 4.11 |
| レシピ | 3 | 3.85 |
| 稲架 | 3 | 3.49 |
| 見え | 3 | 2.91 |
| 傲慢 | 3 | 3.88 |
| 貼る | 3 | 3.82 |
| 冷や汗 | 3 | 3.78 |
| 投げつける | 3 | 3.78 |
| 人物 | 3 | 2.80 |
| 応接室 | 3 | 4.00 |
| 同い年 | 3 | 4.14 |
| 腰 | 3 | 2.88 |
| C | 3 | 3.74 |
| 資金援助 | 3 | 5.05 |
| 出し惜しみ | 3 | 4.52 |
| 晴れて | 3 | 4.13 |
| 舐め | 3 | 3.66 |
| テロ | 3 | 4.49 |
| 中たる | 3 | 4.21 |
| 夕日 | 3 | 4.21 |
| 懸念 | 3 | 3.68 |
| 真っ赤 | 3 | 3.24 |
| 市場 | 3 | 3.73 |
| ぽっかり | 3 | 4.33 |
| ここの所 | 3 | 4.44 |
| 感触 | 3 | 3.37 |
| 開封 | 3 | 4.66 |
| 揺れ | 3 | 3.49 |
| 繰り出す | 3 | 3.52 |
| ペイント | 3 | 5.11 |
| ニューイヤー | 3 | 6.17 |
| 戦前 | 3 | 4.89 |
| 死に | 3 | 3.20 |
| 森林 | 3 | 3.69 |
| 爪 | 3 | 3.21 |
| 解せる | 3 | 4.60 |
| 乱獲 | 3 | 4.89 |
| 技術力 | 3 | 4.44 |
| 胸当て | 3 | 4.41 |
| 仕丁 | 3 | 3.25 |
| 排気ガス | 3 | 5.70 |
| 四十 | 3 | 3.76 |
| 両方 | 3 | 3.65 |
| 勧める | 3 | 4.06 |
| 脳 | 3 | 3.60 |
| 薄い | 3 | 3.15 |
| やがる | 3 | 3.67 |
| 差し出す | 3 | 3.14 |
| ラテン語 | 3 | 5.53 |
| 危機感 | 3 | 4.01 |
| その辺り | 3 | 3.44 |
| いっそ | 3 | 3.65 |
| アポ | 3 | 5.05 |
| 強引 | 3 | 3.42 |
| 昼食 | 3 | 3.51 |
| 輸送車 | 3 | 5.12 |
| 山ほど | 3 | 4.16 |
| 素っ | 3 | 3.58 |
| 誘導 | 3 | 3.59 |
| 鳥 | 3 | 3.14 |
| 浮き上がる | 3 | 4.22 |
| 断絶 | 3 | 4.46 |
| ボート | 3 | 4.39 |
| 来月 | 3 | 4.45 |
| 医学生 | 3 | 5.86 |
| ある日 | 3 | 3.73 |
| 断言 | 3 | 3.62 |
| 生える | 3 | 3.27 |
| お願いいたします | 3 | 4.16 |
| 出発 | 3 | 3.26 |
| 納入 | 3 | 5.00 |
| 越す | 3 | 3.95 |
| 焼き物 | 3 | 4.88 |
| これ以上 | 3 | 3.04 |
| 並み | 3 | 3.87 |
| 考え方 | 3 | 3.72 |
| 辞める | 3 | 3.79 |
| 慣れ | 3 | 3.18 |
| と金 | 3 | 4.40 |
| 隠れ | 3 | 3.31 |
| あっさり | 3 | 3.15 |
| コストダウン | 3 | 5.76 |
| 刺し | 3 | 3.79 |
| 挙げ句 | 3 | 4.26 |
| 上下 | 3 | 3.77 |
| 幼芽 | 3 | 3.74 |
| 急ピッチ | 3 | 4.95 |
| 来客 | 3 | 4.14 |
| ショッピングモール | 3 | 4.88 |
| 実質 | 3 | 4.08 |
| 生産力 | 3 | 5.00 |
| 天然 | 3 | 3.94 |
| 惣社 | 3 | 3.37 |
| 踏襲 | 3 | 5.01 |
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