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 |
|---|---|---|
| 両肩 | 4 | 4.21 |
| 非難 | 4 | 3.84 |
| 見抜く | 4 | 3.76 |
| 相まって | 4 | 4.02 |
| 着ける | 4 | 3.43 |
| 欲 | 4 | 3.67 |
| 行為 | 4 | 3.26 |
| 日課 | 4 | 4.28 |
| 決まり | 4 | 3.89 |
| ハプニング | 4 | 4.88 |
| 記念撮影 | 4 | 5.51 |
| 血肉 | 4 | 4.41 |
| みたいです | 4 | 3.46 |
| 果てる | 4 | 4.11 |
| 徒歩 | 4 | 4.01 |
| 電車 | 4 | 4.10 |
| 元い | 4 | 4.01 |
| 際 | 4 | 3.36 |
| 結果的に | 4 | 3.83 |
| 体高 | 4 | 4.99 |
| 雅語 | 4 | 4.02 |
| スマート | 4 | 4.58 |
| 系 | 4 | 2.92 |
| 敵対 | 4 | 3.58 |
| 預かる | 4 | 3.59 |
| 受験者 | 4 | 4.76 |
| 下し | 4 | 4.24 |
| バラ | 4 | 3.96 |
| 民家 | 4 | 4.31 |
| 良好 | 4 | 4.06 |
| はいはい | 4 | 3.62 |
| 低 | 4 | 3.89 |
| 畏まりました | 4 | 3.72 |
| 仰ぐ | 4 | 3.63 |
| 看板 | 4 | 3.87 |
| ヒント | 4 | 4.04 |
| アタッシュケース | 4 | 5.22 |
| この中 | 4 | 3.83 |
| 深める | 4 | 3.69 |
| 対峙 | 4 | 3.62 |
| 合格者 | 4 | 4.99 |
| 深夜 | 4 | 3.90 |
| シンプル | 4 | 3.78 |
| 列 | 4 | 3.71 |
| 売れる | 4 | 3.55 |
| 正規 | 4 | 4.13 |
| 寝 | 4 | 3.06 |
| 高額 | 4 | 4.14 |
| バリケード | 4 | 4.52 |
| 斑 | 4 | 4.39 |
| 四百 | 4 | 4.36 |
| に決まっている | 4 | 4.04 |
| 露 | 4 | 3.76 |
| はたと | 4 | 4.57 |
| がれ | 4 | 3.99 |
| 息子 | 4 | 3.14 |
| 偉い | 4 | 3.69 |
| 不利 | 4 | 3.45 |
| 絶叫 | 4 | 3.73 |
| 余韻 | 4 | 4.29 |
| 畔 | 4 | 3.52 |
| 高める | 4 | 3.89 |
| 若く | 4 | 4.09 |
| どれ | 4 | 3.75 |
| 妙 | 4 | 3.13 |
| 眠れる | 4 | 3.78 |
| 孕む | 4 | 4.21 |
| 差し置く | 4 | 4.50 |
| 中でも | 4 | 3.22 |
| 組 | 4 | 3.29 |
| 意外 | 4 | 3.21 |
| 在り在り | 4 | 4.37 |
| そうなんですか | 4 | 3.91 |
| 集まり | 4 | 3.63 |
| 特段 | 4 | 4.69 |
| 使命 | 4 | 3.96 |
| 泊まる | 4 | 3.62 |
| 脱衣所 | 4 | 4.55 |
| 自由 | 4 | 3.33 |
| 一変 | 4 | 4.08 |
| 窮地 | 4 | 4.04 |
| てよ | 4 | 3.40 |
| 質問攻め | 4 | 4.68 |
| 土地 | 4 | 3.22 |
| 道具 | 4 | 3.19 |
| 賑わい | 4 | 4.35 |
| 血流 | 4 | 4.98 |
| 当分の間 | 4 | 5.02 |
| 潮 | 4 | 4.57 |
| 御者 | 4 | 3.70 |
| 負ける | 4 | 3.03 |
| 面子 | 4 | 3.78 |
| もどかしい | 4 | 4.26 |
| 一喝 | 4 | 4.40 |
| 失礼 | 4 | 3.13 |
| 対岸 | 4 | 4.50 |
| どうせ | 4 | 3.22 |
| こちらこそ | 4 | 3.88 |
| 切れ | 4 | 3.38 |
| 快く | 4 | 4.08 |
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