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 |
|---|---|---|
| 運搬 | 5 | 4.04 |
| 王族 | 5 | 3.11 |
| 眼前 | 5 | 3.58 |
| 沿い | 5 | 4.04 |
| 連続 | 5 | 3.47 |
| 切り立った | 5 | 4.79 |
| 何より | 5 | 3.02 |
| ばっかり | 5 | 3.54 |
| 罵り | 5 | 4.61 |
| 何だ | 5 | 3.17 |
| 若干 | 5 | 3.24 |
| 一点 | 5 | 3.74 |
| グループ | 5 | 3.72 |
| 険しい | 5 | 3.94 |
| ベスト | 5 | 4.08 |
| 焼く | 5 | 3.28 |
| 消え去る | 5 | 3.85 |
| 似る | 5 | 3.03 |
| 防ぐ | 5 | 3.23 |
| 今のうち | 5 | 3.91 |
| その内 | 5 | 3.39 |
| 闇雲 | 5 | 4.55 |
| 漆黒 | 5 | 3.61 |
| 内側 | 5 | 3.53 |
| けが人 | 5 | 4.99 |
| 蘭 | 5 | 3.73 |
| 誓い | 5 | 3.96 |
| 順番 | 5 | 3.86 |
| あの頃 | 5 | 3.89 |
| ワクワク | 5 | 4.10 |
| ミリ | 5 | 4.20 |
| 威高 | 5 | 3.54 |
| 腕力 | 5 | 3.98 |
| 引き上げる | 5 | 4.00 |
| 枚 | 5 | 3.14 |
| 登録 | 5 | 3.41 |
| お酒 | 5 | 3.70 |
| 外出 | 5 | 4.05 |
| 上機嫌 | 5 | 3.88 |
| 時折 | 5 | 3.49 |
| あらあら | 5 | 4.01 |
| 働き | 5 | 3.64 |
| だり | 5 | 3.41 |
| 亡き | 5 | 3.83 |
| 上品 | 5 | 3.98 |
| 頭上 | 5 | 3.41 |
| アタリ | 5 | 5.02 |
| 東部 | 5 | 4.06 |
| 気をつけて | 5 | 3.82 |
| 結ぶ | 5 | 3.30 |
| 思惑 | 5 | 3.62 |
| 期待感 | 5 | 4.93 |
| 殺し | 5 | 2.99 |
| 一夜 | 5 | 4.08 |
| 一段 | 5 | 4.26 |
| 二手 | 5 | 4.46 |
| 内心 | 5 | 3.22 |
| その他に | 5 | 4.20 |
| 一方 | 5 | 3.21 |
| 手段 | 5 | 3.10 |
| 応える | 5 | 3.51 |
| 直ぐにでも | 5 | 3.90 |
| 歩み | 5 | 3.70 |
| 獲る | 5 | 4.06 |
| 越え | 5 | 3.58 |
| はしゃぐ | 5 | 3.80 |
| とっくに | 5 | 3.74 |
| 達成 | 5 | 3.61 |
| 命中 | 5 | 3.74 |
| 唾 | 5 | 3.87 |
| 未来 | 5 | 3.08 |
| すれ違いざま | 5 | 4.54 |
| 遠慮なく | 5 | 3.85 |
| モーホー | 5 | 6.51 |
| 親子 | 5 | 3.74 |
| 休み | 5 | 3.57 |
| 樹脂 | 5 | 4.68 |
| 固める | 5 | 3.80 |
| 式典 | 5 | 4.04 |
| でさえ | 5 | 3.45 |
| 多すぎる | 5 | 4.09 |
| 守衛所 | 5 | 6.21 |
| 斥候 | 5 | 3.93 |
| 直ちに | 5 | 4.28 |
| 態勢 | 5 | 3.95 |
| 手間 | 5 | 3.57 |
| 柔らか | 5 | 3.62 |
| 道中 | 5 | 3.67 |
| 見やる | 5 | 3.65 |
| 刀伊 | 5 | 3.64 |
| 爆散 | 5 | 4.46 |
| 砂浜 | 5 | 4.07 |
| 紅葉 | 5 | 4.39 |
| 食べられる | 5 | 3.75 |
| 犯す | 5 | 3.68 |
| 良いとして | 5 | 4.23 |
| ケガ | 5 | 4.21 |
| 商売 | 5 | 3.44 |
| 西側 | 5 | 4.12 |
| 信用 | 5 | 3.34 |
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