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 |
|---|---|---|
| 順番 | 5 | 3.86 |
| 父親 | 5 | 3.14 |
| 呟く | 5 | 2.77 |
| 法案 | 5 | 5.15 |
| 浸かる | 5 | 4.01 |
| 偶然 | 5 | 3.40 |
| 争闘 | 5 | 4.78 |
| 引き受ける | 5 | 3.91 |
| 一千万 | 5 | 4.90 |
| 無いと | 5 | 3.66 |
| じっと | 5 | 3.19 |
| 若干 | 5 | 3.24 |
| 覆す | 5 | 3.99 |
| 悠長 | 5 | 4.24 |
| 本命 | 5 | 3.97 |
| 湖 | 5 | 3.38 |
| 承認 | 5 | 4.17 |
| 歴史 | 5 | 3.34 |
| すぐ様 | 5 | 3.41 |
| しょうがない | 5 | 3.52 |
| ホントに | 5 | 3.85 |
| 引きずる | 5 | 3.86 |
| 刀伊 | 5 | 3.64 |
| がっしり | 5 | 4.26 |
| 再確認 | 5 | 4.26 |
| 食い入るように | 5 | 4.49 |
| 長話 | 5 | 4.78 |
| 迎え | 5 | 3.35 |
| 転移 | 5 | 2.83 |
| 着る | 5 | 3.35 |
| ど | 5 | 3.26 |
| 十人 | 5 | 3.89 |
| 一体に | 5 | 4.71 |
| エビ | 5 | 4.40 |
| 遅れる | 5 | 3.60 |
| 唾 | 5 | 3.87 |
| 足の裏 | 5 | 4.56 |
| 口の端 | 5 | 4.08 |
| 順 | 5 | 4.12 |
| 何でも | 5 | 3.05 |
| 何回か | 5 | 4.25 |
| 達成 | 5 | 3.61 |
| もしもの事 | 5 | 4.86 |
| 相場 | 5 | 4.08 |
| 崩れる | 5 | 3.63 |
| 聞いてみると | 5 | 4.24 |
| 分乗 | 5 | 5.31 |
| 救出 | 5 | 3.75 |
| 大まか | 5 | 4.07 |
| 責任者 | 5 | 3.92 |
| 舌鼓 | 5 | 4.62 |
| どういう | 5 | 2.81 |
| ほほ | 5 | 4.30 |
| はしゃぐ | 5 | 3.80 |
| あきれ顔 | 5 | 5.32 |
| 寛ぐ | 5 | 4.58 |
| してやったり | 5 | 4.77 |
| ません | 5 | 3.24 |
| 呈す | 5 | 4.24 |
| 引っ張る | 5 | 3.35 |
| 雄たけび | 5 | 4.74 |
| 振る舞い | 5 | 3.85 |
| 青ざめる | 5 | 3.86 |
| 安定した | 5 | 4.24 |
| 専用 | 5 | 3.53 |
| 治める | 5 | 3.81 |
| 後ずさり | 5 | 4.56 |
| 暑苦しい | 5 | 4.49 |
| 一国 | 5 | 3.97 |
| だもの | 5 | 3.76 |
| 保存 | 5 | 3.86 |
| 行ってくる | 5 | 3.79 |
| 基本的に | 5 | 3.18 |
| 弾丸 | 5 | 3.63 |
| 枚 | 5 | 3.14 |
| 影 | 5 | 2.89 |
| 加速 | 5 | 3.47 |
| 玄関 | 5 | 3.59 |
| 式典 | 5 | 4.04 |
| 身勝手 | 5 | 4.25 |
| イベント | 5 | 3.27 |
| 日間 | 5 | 3.78 |
| 沿い | 5 | 4.04 |
| 地区 | 5 | 3.99 |
| 持参 | 5 | 4.31 |
| けが人 | 5 | 4.99 |
| 儲ける | 5 | 4.54 |
| 突き上げる | 5 | 4.28 |
| 何より | 5 | 3.02 |
| 梅雨 | 5 | 4.72 |
| ローテーション | 5 | 4.73 |
| 頑張れ | 5 | 3.70 |
| において | 5 | 3.01 |
| 十六 | 5 | 4.05 |
| 何なの | 5 | 3.66 |
| 発 | 5 | 3.60 |
| 圧倒 | 5 | 3.78 |
| 血抜き | 5 | 4.46 |
| 下民 | 5 | 5.33 |
| どす黒い | 5 | 4.42 |
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