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 |
|---|---|---|
| 命運 | 1 | 4.41 |
| 内部環境 | 1 | 6.78 |
| 現在値 | 1 | 6.17 |
| 難しさ | 1 | 4.76 |
| マスター | 1 | 3.10 |
| 既視感 | 1 | 4.53 |
| ハッタリ | 1 | 4.60 |
| 言い換える | 1 | 4.44 |
| 通称 | 1 | 4.05 |
| 二人分 | 1 | 4.38 |
| 延期 | 1 | 4.63 |
| 左後ろ | 1 | 5.52 |
| 居座る | 1 | 4.30 |
| チョイス | 1 | 4.61 |
| 済ます | 1 | 4.07 |
| 突っ切る | 1 | 4.33 |
| ラッキースケベ | 1 | 5.16 |
| アラビア数字 | 1 | 5.55 |
| 昼時 | 1 | 4.85 |
| ただいま帰りました | 1 | 5.24 |
| 割り当てる | 1 | 5.33 |
| 毀れ | 1 | 4.33 |
| 壮観 | 1 | 4.62 |
| 湧く | 1 | 3.55 |
| お隠れ | 1 | 5.56 |
| お仕事 | 1 | 3.73 |
| 酔っぱらう | 1 | 4.71 |
| 弾力性 | 1 | 5.45 |
| ノロ | 1 | 5.15 |
| 三社 | 1 | 4.45 |
| 怒涛 | 1 | 4.45 |
| 報われる | 1 | 4.83 |
| 釘 | 1 | 3.92 |
| け | 1 | 3.49 |
| 良くやった | 1 | 4.11 |
| 休日 | 1 | 3.94 |
| 立案者 | 1 | 5.49 |
| 燃費 | 1 | 4.61 |
| ピンク色 | 1 | 4.23 |
| 含み笑い | 1 | 4.71 |
| 運営 | 1 | 3.53 |
| どうしたら良い | 1 | 4.04 |
| 険しい山 | 1 | 5.43 |
| 人外 | 1 | 4.05 |
| 訪ねる | 1 | 3.68 |
| 公 | 1 | 3.28 |
| 若造 | 1 | 4.36 |
| 備え | 1 | 3.71 |
| 身構え | 1 | 4.32 |
| 根拠 | 1 | 3.89 |
| 曇る | 1 | 4.17 |
| とめど無く | 1 | 5.00 |
| かん | 1 | 4.46 |
| 用心 | 1 | 4.26 |
| つなぎ目 | 1 | 5.64 |
| 改善 | 1 | 3.85 |
| 貫通 | 1 | 3.82 |
| 前歯 | 1 | 4.93 |
| 八つ目 | 1 | 4.96 |
| 指定 | 1 | 3.37 |
| 嘔く | 1 | 5.73 |
| シソ | 1 | 5.73 |
| VSOP | 1 | 7.59 |
| ぶつかり合い | 1 | 4.45 |
| 人間的 | 1 | 4.85 |
| 追っ | 1 | 5.13 |
| 風船 | 1 | 4.51 |
| 潜水 | 1 | 4.35 |
| 来訪 | 1 | 4.06 |
| 引きあげる | 1 | 5.45 |
| ううん | 1 | 3.63 |
| 雇われ | 1 | 4.26 |
| ショック | 1 | 3.60 |
| 公平 | 1 | 4.30 |
| 飲みほす | 1 | 5.27 |
| 闘争 | 1 | 4.16 |
| 日時 | 1 | 4.60 |
| 減少 | 1 | 4.04 |
| 予断を許さない | 1 | 5.41 |
| 取っかえ引っかえ | 1 | 5.65 |
| 金属疲労 | 1 | 6.11 |
| 解禁 | 1 | 4.64 |
| 女ども | 1 | 5.00 |
| なければいけない | 1 | 5.61 |
| 勝負どころ | 1 | 5.49 |
| ブルブル | 1 | 4.73 |
| 裂ける | 1 | 4.11 |
| 嫌み | 1 | 4.77 |
| 吐き気 | 1 | 4.23 |
| 吉日 | 1 | 5.62 |
| 尻 | 1 | 3.75 |
| 徴兵制度 | 1 | 6.45 |
| 大盤振る舞い | 1 | 4.84 |
| 茹で | 1 | 4.50 |
| 陸路 | 1 | 4.61 |
| 万端 | 1 | 4.67 |
| 言い繕う | 1 | 5.10 |
| 受けつけ | 1 | 6.17 |
| 問わず | 1 | 4.02 |
| どこの馬の骨 | 1 | 5.00 |
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