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 |
|---|---|---|
| 夢中 | 4 | 3.76 |
| 他ならない | 4 | 3.90 |
| 暮れ | 4 | 4.07 |
| それもそうだ | 4 | 4.28 |
| 所で | 4 | 3.30 |
| 秘 | 4 | 4.46 |
| 便利 | 4 | 3.35 |
| 構図 | 4 | 4.32 |
| 使命 | 4 | 3.96 |
| 切り落とし | 4 | 4.51 |
| 畏まりました | 4 | 3.72 |
| 収める | 4 | 3.79 |
| 無くして | 4 | 4.04 |
| 嫡男 | 4 | 4.13 |
| 頷き | 4 | 3.24 |
| 監視 | 4 | 3.31 |
| 質問攻め | 4 | 4.68 |
| 遠ざける | 4 | 4.03 |
| 鬱陶しい | 4 | 3.92 |
| 快諾 | 4 | 4.54 |
| 出会う | 4 | 3.16 |
| 税金 | 4 | 4.20 |
| 膨らみ | 4 | 4.38 |
| 血流 | 4 | 4.98 |
| 富士 | 4 | 5.23 |
| 妙 | 4 | 3.13 |
| 具体的 | 4 | 3.47 |
| 咀嚼 | 4 | 4.15 |
| 羽蟻 | 4 | 3.83 |
| 悪さ | 4 | 3.79 |
| 上手い | 4 | 3.50 |
| いっちょ | 4 | 4.81 |
| 偉い | 4 | 3.69 |
| 籠る | 4 | 3.91 |
| 行為 | 4 | 3.26 |
| 銅線 | 4 | 5.58 |
| 海辺 | 4 | 4.68 |
| 修行 | 4 | 3.46 |
| 我ら | 4 | 3.27 |
| 毎に | 4 | 3.53 |
| 空腹 | 4 | 4.02 |
| 土筆 | 4 | 4.40 |
| 話し込む | 4 | 4.37 |
| 低 | 4 | 3.89 |
| 列 | 4 | 3.71 |
| 射殺す | 4 | 5.17 |
| 奥義 | 4 | 4.10 |
| こっそり | 4 | 3.49 |
| 姉 | 4 | 2.91 |
| 剣 | 4 | 2.24 |
| 超大物 | 4 | 5.75 |
| 伝う | 4 | 3.97 |
| 踏む | 4 | 3.32 |
| 伴う | 4 | 3.51 |
| 深夜 | 4 | 3.90 |
| 座り | 4 | 3.58 |
| ポカン | 4 | 4.28 |
| 言いにくい | 4 | 4.59 |
| 入り組む | 4 | 4.49 |
| 免状 | 4 | 5.18 |
| 抱きしめる | 4 | 3.35 |
| 小型 | 4 | 3.70 |
| 屈強 | 4 | 4.12 |
| 貴殿 | 4 | 3.96 |
| 撃つ | 4 | 3.27 |
| 資金 | 4 | 3.71 |
| 貸し | 4 | 3.38 |
| 稼げる | 4 | 3.86 |
| 敵対 | 4 | 3.58 |
| 拾う | 4 | 3.44 |
| 刹那 | 4 | 2.81 |
| バリア | 4 | 4.49 |
| 中隊長 | 4 | 4.30 |
| 煩わしい | 4 | 4.35 |
| 自由自在 | 4 | 4.42 |
| 学ぶ | 4 | 3.35 |
| なー | 4 | 3.13 |
| 火燵 | 4 | 4.74 |
| 事情 | 4 | 3.01 |
| 合計 | 4 | 3.81 |
| つつある | 4 | 3.63 |
| 捕まえる | 4 | 3.41 |
| 表情筋 | 4 | 4.81 |
| 和風 | 4 | 4.52 |
| 凌ぐ | 4 | 4.07 |
| タイヤ | 4 | 4.53 |
| クレーター | 4 | 4.29 |
| 帰途 | 4 | 5.15 |
| 為される | 4 | 4.48 |
| 方角 | 4 | 3.79 |
| 御者 | 4 | 3.70 |
| 汁 | 4 | 3.50 |
| 夫妻 | 4 | 3.84 |
| 有意義 | 4 | 4.32 |
| 分断 | 4 | 4.10 |
| 旗頭 | 4 | 4.92 |
| 欲情 | 4 | 4.77 |
| 担ぐ | 4 | 4.10 |
| 掲げる | 4 | 3.37 |
| 卓 | 4 | 3.97 |
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