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 |
|---|---|---|
| 万一 | 1 | 4.30 |
| 住まう | 1 | 4.00 |
| 歓待 | 1 | 4.33 |
| 冱えない | 1 | 4.65 |
| 講義 | 1 | 3.77 |
| 丸みを帯びた | 1 | 5.00 |
| 窃盗 | 1 | 4.69 |
| パチンコ台 | 1 | 6.69 |
| 苦虫を噛み潰したよう | 1 | 4.57 |
| ただならぬ | 1 | 4.66 |
| 居住まい | 1 | 4.66 |
| 立ちのぼる | 1 | 5.27 |
| 縦横無尽 | 1 | 4.31 |
| 国内外 | 1 | 4.84 |
| 急 | 1 | 3.79 |
| 若かりし頃 | 1 | 5.12 |
| 三十一日 | 1 | 5.48 |
| 狙いを定める | 1 | 4.77 |
| 主導権 | 1 | 4.31 |
| 立案 | 1 | 4.51 |
| 機材 | 1 | 4.37 |
| 満更でもない | 1 | 4.78 |
| 我が物顔 | 1 | 4.78 |
| 駒 | 1 | 3.90 |
| 見誤る | 1 | 5.19 |
| イマジネーション | 1 | 5.77 |
| 食らわす | 1 | 4.99 |
| エントロピー | 1 | 5.69 |
| 白熱 | 1 | 4.51 |
| 吹きすさぶ | 1 | 5.09 |
| カニ | 1 | 4.22 |
| 視点 | 1 | 3.59 |
| 初めは | 1 | 3.67 |
| 正確に言うと | 1 | 4.89 |
| かや | 1 | 4.88 |
| 関連 | 1 | 3.73 |
| 大振り | 1 | 4.48 |
| ツキノワグマ | 1 | 5.95 |
| だったろ | 1 | 4.89 |
| r | 1 | 5.18 |
| 腰が抜ける | 1 | 5.76 |
| 屁理屈 | 1 | 4.73 |
| バッサリ | 1 | 4.57 |
| 二人分 | 1 | 4.38 |
| 雑種 | 1 | 4.94 |
| 熟睡 | 1 | 4.63 |
| がぶり | 1 | 5.05 |
| 前々から | 1 | 4.29 |
| 時空 | 1 | 3.47 |
| 講師 | 1 | 4.26 |
| 立ち入る | 1 | 4.31 |
| 何番目 | 1 | 5.50 |
| 筆頭とする | 1 | 4.89 |
| ニヤニヤ | 1 | 3.81 |
| 活用 | 1 | 3.83 |
| 姿を隠す | 1 | 4.89 |
| 音信不通 | 1 | 5.22 |
| 投射 | 1 | 4.61 |
| 十一 | 1 | 4.01 |
| 両端 | 1 | 4.48 |
| 出発予定時刻 | 1 | 6.66 |
| 下賤 | 1 | 4.75 |
| 公園 | 1 | 3.94 |
| 大統領 | 1 | 4.28 |
| 濃緑 | 1 | 5.16 |
| 峨々 | 1 | 4.00 |
| 呼びかけ | 1 | 3.81 |
| 至る所 | 1 | 4.49 |
| 家事 | 1 | 4.03 |
| とびっ切り | 1 | 4.80 |
| 弱さ | 1 | 4.17 |
| 勝手に | 1 | 3.04 |
| 漲る | 1 | 4.30 |
| 薄明り | 1 | 5.75 |
| 委縮 | 1 | 4.85 |
| 攻撃的 | 1 | 4.32 |
| 揺れる | 1 | 3.45 |
| 極み | 1 | 4.29 |
| つかぬ事 | 1 | 5.21 |
| 食いしばる | 1 | 4.17 |
| 脱線 | 1 | 4.48 |
| 立ち話 | 1 | 4.50 |
| なさいます | 1 | 4.40 |
| 穴埋め | 1 | 4.94 |
| 濃 | 1 | 4.46 |
| 外米 | 1 | 5.45 |
| ひそひそ | 1 | 4.50 |
| 旅路 | 1 | 4.27 |
| なりに | 1 | 4.03 |
| 背筋 | 1 | 3.62 |
| 司令官 | 1 | 4.00 |
| 誕生 | 1 | 3.78 |
| 下の毛 | 1 | 6.04 |
| 他言 | 1 | 4.90 |
| 脱落者 | 1 | 5.10 |
| 聞き方 | 1 | 4.88 |
| 定か | 1 | 4.17 |
| 給え | 1 | 4.07 |
| 再稼働 | 1 | 5.61 |
| 無き | 1 | 4.12 |
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