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 |
|---|---|---|
| 体勢 | 3 | 3.40 |
| 深 | 3 | 3.89 |
| 規律 | 3 | 4.50 |
| カテ | 3 | 6.55 |
| 中断 | 3 | 3.88 |
| 引き戸 | 3 | 4.74 |
| 侯爵 | 3 | 3.04 |
| 避難 | 3 | 3.64 |
| 検討 | 3 | 3.86 |
| アゴ | 3 | 4.78 |
| 四方 | 3 | 3.91 |
| ゴミ | 3 | 3.82 |
| 六百 | 3 | 4.55 |
| 今しがた | 3 | 4.40 |
| 村 | 3 | 2.56 |
| 整える | 3 | 3.55 |
| 洞窟 | 3 | 3.22 |
| 飲み水 | 3 | 4.79 |
| からには | 3 | 3.85 |
| 丸 | 3 | 3.59 |
| 種 | 3 | 2.95 |
| 受勲者 | 3 | 6.59 |
| 至福 | 3 | 4.55 |
| 応援 | 3 | 3.41 |
| 駆けだす | 3 | 4.55 |
| 等しい | 3 | 3.70 |
| 高が | 3 | 3.91 |
| 詳しくは | 3 | 3.95 |
| 画期的 | 3 | 4.69 |
| 飲みで | 3 | 3.63 |
| 傾き | 3 | 4.25 |
| 期日 | 3 | 4.71 |
| 食い込む | 3 | 4.17 |
| 切りそろえる | 3 | 4.84 |
| 同業者 | 3 | 4.63 |
| コレクション | 3 | 4.51 |
| 発想 | 3 | 3.73 |
| 公の場 | 3 | 4.56 |
| 間隔 | 3 | 4.13 |
| 達人 | 3 | 4.08 |
| 遂げる | 3 | 4.02 |
| 一刻も早く | 3 | 4.09 |
| 数多く | 3 | 3.89 |
| ともかく | 3 | 3.10 |
| 中旬 | 3 | 5.02 |
| 本陣 | 3 | 3.99 |
| からかう | 3 | 3.66 |
| 分布 | 3 | 4.72 |
| 提示 | 3 | 3.79 |
| 事件 | 3 | 3.20 |
| 秘策 | 3 | 4.70 |
| 甲高い | 3 | 3.95 |
| 引き締め | 3 | 4.07 |
| 縁談 | 3 | 4.10 |
| 不通 | 3 | 4.57 |
| 共にする | 3 | 4.31 |
| 駐車場 | 3 | 4.54 |
| 試煉 | 3 | 4.50 |
| 映し出す | 3 | 3.87 |
| 二つ目 | 3 | 4.11 |
| 単価 | 3 | 4.91 |
| 細長い | 3 | 4.13 |
| されど | 3 | 4.23 |
| ラフ | 3 | 4.24 |
| 神々しい | 3 | 4.15 |
| 外れる | 3 | 3.64 |
| さえも | 3 | 3.68 |
| 忌まわしい | 3 | 4.48 |
| ホヤ | 3 | 5.58 |
| 飛び交う | 3 | 4.04 |
| 尋常 | 3 | 3.81 |
| ステキ | 3 | 4.77 |
| 踏み入れる | 3 | 3.82 |
| 怠る | 3 | 3.91 |
| 甲斐 | 3 | 3.92 |
| ぬれ手 | 3 | 5.49 |
| 快適 | 3 | 4.05 |
| 未知 | 3 | 3.76 |
| 所有権 | 3 | 4.51 |
| 手順 | 3 | 3.94 |
| 威嚇 | 3 | 3.76 |
| 寿命 | 3 | 3.81 |
| お出で | 3 | 3.80 |
| 半径 | 3 | 4.21 |
| 切 | 3 | 3.67 |
| 己 | 3 | 3.00 |
| 人通り | 3 | 4.24 |
| プライベート | 3 | 4.27 |
| 現れ | 3 | 3.42 |
| ドS | 3 | 5.04 |
| 崇拝 | 3 | 4.46 |
| ヘイト | 3 | 4.67 |
| 老 | 3 | 3.39 |
| お世話 | 3 | 3.59 |
| 視察 | 3 | 3.93 |
| 敷き詰める | 3 | 4.41 |
| 流しこむ | 3 | 5.70 |
| 度胸 | 3 | 4.18 |
| 睡魔 | 3 | 4.57 |
| 大義 | 3 | 4.54 |
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