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 |
|---|---|---|
| 頑固 | 1 | 4.22 |
| 急接近 | 1 | 4.87 |
| それとなく | 1 | 4.16 |
| もんだから | 1 | 4.16 |
| 揺ら揺ら | 1 | 4.28 |
| 畑 | 1 | 3.50 |
| 埼玉 | 1 | 5.22 |
| 物質 | 1 | 3.82 |
| 収集 | 1 | 4.11 |
| 万端 | 1 | 4.67 |
| 土足で | 1 | 5.00 |
| 順を追って | 1 | 4.90 |
| 応接間 | 1 | 4.41 |
| 面食らう | 1 | 4.33 |
| 混乱 | 1 | 3.09 |
| 何年ぶりか | 1 | 5.69 |
| サンゴ | 1 | 4.40 |
| 人前で | 1 | 4.25 |
| 間に合い | 1 | 4.82 |
| 得意顔 | 1 | 5.42 |
| そうなんです | 1 | 3.96 |
| 順路 | 1 | 5.01 |
| 内臓 | 1 | 3.84 |
| 弁 | 1 | 4.62 |
| ラベル | 1 | 4.87 |
| 仕掛ける | 1 | 3.51 |
| 誉れ高い | 1 | 5.40 |
| 切り傷 | 1 | 4.46 |
| 凡そ | 1 | 3.59 |
| 顎をしゃくる | 1 | 5.35 |
| 質のいい | 1 | 5.06 |
| 海栗 | 1 | 4.45 |
| 勧める | 1 | 4.06 |
| 取り残す | 1 | 4.19 |
| 桶 | 1 | 4.08 |
| 然 | 1 | 3.99 |
| 生肉 | 1 | 4.70 |
| 相好 | 1 | 4.73 |
| 回数 | 1 | 3.91 |
| トロトロ | 1 | 5.26 |
| 手間が省ける | 1 | 5.15 |
| 働き詰め | 1 | 5.39 |
| VSOP | 1 | 7.59 |
| 宝の山 | 1 | 4.98 |
| 照射 | 1 | 4.69 |
| 教え子 | 1 | 4.39 |
| 精 | 1 | 3.78 |
| と仮定しても | 1 | 5.64 |
| ソフトボール | 1 | 5.35 |
| 生温かい | 1 | 4.68 |
| 悩ます | 1 | 4.50 |
| 反発 | 1 | 3.90 |
| タンク | 1 | 4.22 |
| うねうね | 1 | 4.87 |
| 兄ちゃん | 1 | 3.55 |
| 大違い | 1 | 4.43 |
| 依頼主 | 1 | 4.33 |
| 小洒落た | 1 | 5.42 |
| 絶対的 | 1 | 3.97 |
| 苦しめる | 1 | 4.03 |
| 苦慮 | 1 | 4.96 |
| チャラ | 1 | 4.61 |
| 怒鳴りつける | 1 | 4.33 |
| 中継 | 1 | 3.94 |
| 木造家屋 | 1 | 5.84 |
| ワゴン車 | 1 | 5.73 |
| 新品 | 1 | 4.41 |
| 訴える | 1 | 3.79 |
| 逸れる | 1 | 3.98 |
| 原作 | 1 | 4.31 |
| あきれ果てる | 1 | 5.57 |
| 最長 | 1 | 4.89 |
| 危険極まりない | 1 | 4.97 |
| 足蹴 | 1 | 4.89 |
| 形式的 | 1 | 4.90 |
| 本職 | 1 | 4.30 |
| 芝 | 1 | 4.67 |
| 呼び捨て | 1 | 4.20 |
| 敏捷性 | 1 | 4.85 |
| キツい | 1 | 4.55 |
| 基本中の基本 | 1 | 5.07 |
| 血みどろ | 1 | 4.89 |
| 綻ぶ | 1 | 4.10 |
| 持ち家 | 1 | 5.62 |
| 飛び込み | 1 | 4.37 |
| ラインナップ | 1 | 4.88 |
| 役立つ | 1 | 3.89 |
| 自画自賛 | 1 | 4.84 |
| 題 | 1 | 5.17 |
| 踏みとどまる | 1 | 4.47 |
| 代りに | 1 | 4.34 |
| キッと | 1 | 4.49 |
| 任 | 1 | 4.16 |
| 相関 | 1 | 5.92 |
| このため | 1 | 4.45 |
| トラック | 1 | 4.25 |
| お出まし | 1 | 4.76 |
| 途上 | 1 | 4.71 |
| 団 | 1 | 3.18 |
| 不利益 | 1 | 4.35 |
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