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 |
|---|---|---|
| 出迎え | 5 | 3.74 |
| 誓う | 5 | 3.69 |
| 平気 | 5 | 3.56 |
| もんじゃ | 5 | 3.76 |
| 刻む | 5 | 3.37 |
| じっと | 5 | 3.19 |
| 日本語 | 5 | 3.90 |
| 罪人 | 5 | 4.02 |
| 命中 | 5 | 3.74 |
| そそくさ | 5 | 4.24 |
| 暴れる | 5 | 3.33 |
| 焼く | 5 | 3.28 |
| 優先 | 5 | 3.37 |
| 注文 | 5 | 3.54 |
| 飛び散る | 5 | 3.93 |
| 魚群 | 5 | 5.56 |
| 休み | 5 | 3.57 |
| 一歳 | 5 | 4.56 |
| 申し上げる | 5 | 3.65 |
| 潰す | 5 | 3.09 |
| 唾 | 5 | 3.87 |
| 影響 | 5 | 3.05 |
| うねる | 5 | 4.56 |
| 予定通り | 5 | 3.81 |
| なりません | 5 | 3.51 |
| もんか | 5 | 4.03 |
| 越え | 5 | 3.58 |
| 河原 | 5 | 4.61 |
| 見送り | 5 | 3.75 |
| 脚 | 5 | 3.41 |
| 食欲をそそる | 5 | 4.86 |
| 三千 | 5 | 4.21 |
| あっち | 5 | 3.48 |
| 王族 | 5 | 3.11 |
| これなら | 5 | 3.45 |
| 一方 | 5 | 3.21 |
| 獲る | 5 | 4.06 |
| 逃す | 5 | 3.61 |
| 預け | 5 | 3.62 |
| 見惚れる | 5 | 4.04 |
| 左腕 | 5 | 3.56 |
| 際に | 5 | 3.24 |
| ものか | 5 | 3.30 |
| 鳥 | 5 | 3.14 |
| 真新しい | 5 | 4.50 |
| 順番 | 5 | 3.86 |
| 苛立つ | 5 | 3.97 |
| 若干 | 5 | 3.24 |
| 法案 | 5 | 5.15 |
| 改めて | 5 | 3.04 |
| 遥かに | 5 | 3.61 |
| 多すぎる | 5 | 4.09 |
| もういい | 5 | 3.73 |
| どれだけ | 5 | 3.08 |
| 長話 | 5 | 4.78 |
| もしもの事 | 5 | 4.86 |
| 持参 | 5 | 4.31 |
| 気持ちよく | 5 | 4.45 |
| 熟成 | 5 | 4.42 |
| 食べられる | 5 | 3.75 |
| 生まれ | 5 | 3.27 |
| 早々 | 5 | 3.54 |
| なんというか | 5 | 3.68 |
| 憎き | 5 | 4.73 |
| 凄まじい | 5 | 3.30 |
| 蘭 | 5 | 3.73 |
| お嬢様 | 5 | 3.17 |
| 食い | 5 | 3.66 |
| 守衛所 | 5 | 6.21 |
| 奇譚 | 5 | 3.49 |
| 遠征 | 5 | 3.84 |
| 分乗 | 5 | 5.31 |
| 羽織る | 5 | 3.89 |
| 艶 | 5 | 3.84 |
| 一段 | 5 | 4.26 |
| 総当たり | 5 | 5.50 |
| がっしり | 5 | 4.26 |
| 言いよう | 5 | 3.98 |
| 居心地 | 5 | 4.01 |
| 悠長 | 5 | 4.24 |
| 静岡 | 5 | 5.60 |
| 打つかり | 5 | 4.01 |
| 化粧 | 5 | 4.00 |
| 手おけ | 5 | 3.35 |
| 退屈 | 5 | 3.79 |
| 最終的 | 5 | 3.50 |
| グループ | 5 | 3.72 |
| 同席 | 5 | 4.03 |
| 雄たけび | 5 | 4.74 |
| 当てはまる | 5 | 4.23 |
| 歩 | 5 | 3.66 |
| 想う | 5 | 3.60 |
| 宙 | 5 | 3.47 |
| なよ | 5 | 3.13 |
| 所々 | 5 | 4.00 |
| バランス | 5 | 3.55 |
| ソファ | 5 | 3.68 |
| その内 | 5 | 3.39 |
| 承知 | 5 | 3.43 |
| 着る | 5 | 3.35 |
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