In a future Japan divided into several small nations after the collapse of civilization, this is a rise-to-power harem story depicting battles and adventures woven between the protagonist who has obtained the strongest level of power and several girls. The protagonist, who has time-slipped into a post-civilization-collapse future where special powers have become commonplace, takes up work as an "excavator," uncovering modern machine parts, products, metals and other items said to be relics from the mythological age based on memories and knowledge from that era. Furthermore, the protagonist encounters a beautiful girl in that land. This girl is the grown-up version of the neighbor's only daughter who was caught up in the time transfer before it happened—a young girl who adored him saying "I love you, big brother." That neighbor has become a Grand Duke ruling that land. ※Book version Volume 1 released on December 25, 2015. Book version Volume 2 released on February 25, 2016. Book version Volume 3 released on November 10, 2016.
| Word | Frequency | Difficulty |
|---|---|---|
| 筋 | 4 | 3.68 |
| 色んな | 4 | 3.36 |
| 元い | 4 | 4.01 |
| 薄ら | 4 | 4.39 |
| 剣 | 4 | 2.24 |
| 米 | 4 | 3.70 |
| 繋がる | 4 | 3.22 |
| 至って | 4 | 3.57 |
| 驚いたことに | 4 | 4.63 |
| 冠 | 4 | 4.08 |
| おはようございます | 4 | 3.74 |
| 夫人 | 4 | 3.53 |
| フラグ | 4 | 3.87 |
| 点者 | 4 | 3.84 |
| 泊まる | 4 | 3.62 |
| 舞う | 4 | 3.61 |
| 両側 | 4 | 4.35 |
| ヒント | 4 | 4.04 |
| さて | 4 | 2.78 |
| 始末 | 4 | 3.55 |
| 学ぶ | 4 | 3.35 |
| 人種 | 4 | 3.77 |
| がれ | 4 | 3.99 |
| 生い茂る | 4 | 4.25 |
| 評議員 | 4 | 5.13 |
| 合計 | 4 | 3.81 |
| 火燵 | 4 | 4.74 |
| ダメージを与える | 4 | 4.24 |
| 見あげる | 4 | 5.64 |
| 丘 | 4 | 3.57 |
| 喜色 | 4 | 4.53 |
| 漁 | 4 | 3.73 |
| 刀身 | 4 | 3.73 |
| 稀 | 4 | 3.91 |
| 喋り | 4 | 3.80 |
| 練り上げる | 4 | 4.43 |
| 思いで | 4 | 4.02 |
| 一級 | 4 | 4.41 |
| 見すぼらしい | 4 | 4.64 |
| どちら | 4 | 3.37 |
| 嫁さん | 4 | 4.00 |
| 糸口 | 4 | 4.69 |
| 頻度 | 4 | 4.19 |
| はたと | 4 | 4.57 |
| 徒歩 | 4 | 4.01 |
| 個体 | 4 | 3.56 |
| 富士 | 4 | 5.23 |
| 受験者 | 4 | 4.76 |
| 乾いた | 4 | 3.83 |
| チート | 4 | 3.76 |
| 合掌 | 4 | 4.82 |
| 踏む | 4 | 3.32 |
| 覆う | 4 | 3.25 |
| ずい | 4 | 4.62 |
| 盗る | 4 | 4.33 |
| 資金 | 4 | 3.71 |
| ピンチ | 4 | 4.16 |
| 冷やす | 4 | 4.17 |
| 槍 | 4 | 2.74 |
| 恐れ | 4 | 3.43 |
| 単車 | 4 | 6.34 |
| やっぱ | 4 | 3.52 |
| 尾張 | 4 | 4.25 |
| 面子 | 4 | 3.78 |
| してみると | 4 | 4.17 |
| 勘弁 | 4 | 3.65 |
| 息子 | 4 | 3.14 |
| つつある | 4 | 3.63 |
| 高額 | 4 | 4.14 |
| 本能 | 4 | 3.70 |
| 老け | 4 | 4.90 |
| その気 | 4 | 3.88 |
| こっそり | 4 | 3.49 |
| 方角 | 4 | 3.79 |
| 瑞々しい | 4 | 4.55 |
| 入り組む | 4 | 4.49 |
| ニヤリ | 4 | 3.76 |
| お見舞い | 4 | 4.28 |
| 盗む | 4 | 3.61 |
| 差し上げる | 4 | 4.01 |
| 髪の毛 | 4 | 3.78 |
| 途端 | 4 | 3.59 |
| パソコン | 4 | 4.05 |
| 仕舞いに | 4 | 4.70 |
| 知らせ | 4 | 3.68 |
| 加える | 4 | 3.36 |
| ギャンブル | 4 | 4.62 |
| 咀嚼 | 4 | 4.15 |
| 抵抗 | 4 | 2.84 |
| 食器 | 4 | 3.99 |
| 一喝 | 4 | 4.40 |
| 生命 | 4 | 3.56 |
| 奥歯 | 4 | 4.28 |
| 掲げる | 4 | 3.37 |
| せっせと | 4 | 4.37 |
| 一目散に | 4 | 4.38 |
| 頷ける | 4 | 4.19 |
| ぐらい | 4 | 2.70 |
| 横手 | 4 | 5.00 |
| 文字どおり | 4 | 5.15 |
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