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 |
|---|---|---|
| 込み上げる | 4 | 4.27 |
| 盗む | 4 | 3.61 |
| 冷やす | 4 | 4.17 |
| 暖簾 | 4 | 4.76 |
| てよ | 4 | 3.40 |
| 切れ | 4 | 3.38 |
| 何ら | 4 | 3.85 |
| 何でもない | 4 | 3.50 |
| 側から | 4 | 3.82 |
| 掛け声 | 4 | 4.15 |
| タイヤ | 4 | 4.53 |
| 事務方 | 4 | 5.19 |
| 受け入れる | 4 | 3.42 |
| 切り落とし | 4 | 4.51 |
| 銃 | 4 | 3.38 |
| 取りつける | 4 | 4.95 |
| 熟す | 4 | 3.95 |
| 生命 | 4 | 3.56 |
| お疲れ | 4 | 3.93 |
| 血流 | 4 | 4.98 |
| 材料 | 4 | 3.36 |
| 知らせ | 4 | 3.68 |
| 四手 | 4 | 4.80 |
| ヤバい | 4 | 3.88 |
| 下心 | 4 | 4.42 |
| 抱きしめる | 4 | 3.35 |
| 両目 | 4 | 4.25 |
| 深夜 | 4 | 3.90 |
| 治療 | 4 | 3.17 |
| 未完成 | 4 | 4.57 |
| 偉い | 4 | 3.69 |
| いい事 | 4 | 3.82 |
| 面影 | 4 | 4.21 |
| 朝ごはん | 4 | 4.48 |
| 手浴 | 4 | 4.31 |
| 大穴 | 4 | 4.16 |
| テリトリー | 4 | 4.70 |
| 会社 | 4 | 3.72 |
| 本来なら | 4 | 3.43 |
| 施工 | 4 | 5.21 |
| 伝う | 4 | 3.97 |
| 山菜 | 4 | 4.55 |
| 道路 | 4 | 4.07 |
| 本気 | 4 | 3.36 |
| フラグ | 4 | 3.87 |
| 女心 | 4 | 4.79 |
| 良好 | 4 | 4.06 |
| 駈け | 4 | 4.90 |
| 必然的 | 4 | 4.11 |
| 自由自在 | 4 | 4.42 |
| 振り分け | 4 | 4.66 |
| 強者 | 4 | 3.73 |
| 後退 | 4 | 3.67 |
| 華やか | 4 | 4.02 |
| その気 | 4 | 3.88 |
| それもそうだ | 4 | 4.28 |
| 言い難い | 4 | 4.09 |
| 空腹 | 4 | 4.02 |
| ヒント | 4 | 4.04 |
| 頷き | 4 | 3.24 |
| からすると | 4 | 3.77 |
| 詰まる | 4 | 3.59 |
| 差し上げる | 4 | 4.01 |
| 志願 | 4 | 4.39 |
| 捕まえる | 4 | 3.41 |
| 特段 | 4 | 4.69 |
| 不自然 | 4 | 3.62 |
| 靴 | 4 | 3.57 |
| 欲 | 4 | 3.67 |
| 仕方ない | 4 | 2.99 |
| 合わせ | 4 | 3.63 |
| やっとの思いで | 4 | 5.05 |
| 草木 | 4 | 4.26 |
| 妙 | 4 | 3.13 |
| 飲み | 4 | 3.48 |
| とてもじゃないが | 4 | 4.51 |
| 丘 | 4 | 3.57 |
| 層 | 4 | 3.29 |
| 微笑む | 4 | 3.01 |
| 座布団 | 4 | 4.68 |
| 染まる | 4 | 3.39 |
| 事務 | 4 | 4.39 |
| 血肉 | 4 | 4.41 |
| 便利 | 4 | 3.35 |
| 体格 | 4 | 3.64 |
| 押し倒し | 4 | 4.69 |
| 言いわけ | 4 | 5.57 |
| 適当 | 4 | 3.17 |
| 至極 | 4 | 4.03 |
| 隊列 | 4 | 4.05 |
| 心情 | 4 | 3.87 |
| 優に | 4 | 4.11 |
| この方 | 4 | 3.99 |
| 手に入る | 4 | 3.80 |
| と思ったら | 4 | 3.50 |
| 思いで | 4 | 4.02 |
| 凌ぐ | 4 | 4.07 |
| そうする | 4 | 3.75 |
| 拾う | 4 | 3.44 |
| 押し込む | 4 | 3.92 |
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