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 |
|---|---|---|
| 担ぎ | 3 | 4.22 |
| 整える | 3 | 3.55 |
| 廃止 | 3 | 4.70 |
| あくまでも | 3 | 3.48 |
| 脱ぐ | 3 | 3.49 |
| 膂力 | 3 | 4.10 |
| 思い込む | 3 | 3.91 |
| に比べ | 3 | 3.73 |
| 緑 | 3 | 3.32 |
| 海産物 | 3 | 4.73 |
| 塩焼 | 3 | 6.64 |
| 地殻変動 | 3 | 5.49 |
| 正しい | 3 | 3.12 |
| 後ろ手 | 3 | 4.44 |
| 荒らし | 3 | 4.48 |
| 何だい | 3 | 3.95 |
| 試煉 | 3 | 4.50 |
| 年季 | 3 | 4.60 |
| 怠る | 3 | 3.91 |
| 握り | 3 | 3.58 |
| 受勲者 | 3 | 6.59 |
| 同業者 | 3 | 4.63 |
| 飛びたつ | 3 | 5.86 |
| 閉める | 3 | 3.66 |
| 至福感 | 3 | 6.89 |
| コレクション | 3 | 4.51 |
| 云える | 3 | 3.55 |
| 組織 | 3 | 3.25 |
| 畳 | 3 | 4.04 |
| 少し間をおいて | 3 | 5.60 |
| 昨夜 | 3 | 3.52 |
| 部 | 3 | 3.30 |
| 描く | 3 | 3.10 |
| 試験会場 | 3 | 5.15 |
| 泣く | 3 | 3.07 |
| で御座います | 3 | 3.39 |
| 大半 | 3 | 3.47 |
| 差し手 | 3 | 3.97 |
| 上部 | 3 | 4.17 |
| お手本 | 3 | 4.59 |
| 比類 | 3 | 4.97 |
| もう少しで | 3 | 4.13 |
| 全くと言っていいほど | 3 | 4.94 |
| 見る見る | 3 | 3.97 |
| 順次 | 3 | 4.56 |
| とやら | 3 | 3.43 |
| 奇異 | 3 | 4.11 |
| 合図 | 3 | 3.43 |
| 細め | 3 | 3.57 |
| 薬 | 3 | 3.12 |
| 五割 | 3 | 4.71 |
| 乞う | 3 | 4.46 |
| 切り出す | 3 | 3.88 |
| 鉄くず | 3 | 5.16 |
| 新調 | 3 | 4.43 |
| 自負 | 3 | 4.05 |
| そうしたら | 3 | 3.96 |
| 素敵 | 3 | 3.41 |
| 土間 | 3 | 4.70 |
| 立たす | 3 | 4.35 |
| 仲 | 3 | 3.42 |
| 時おり | 3 | 4.49 |
| 細長い | 3 | 4.13 |
| おっ | 3 | 3.38 |
| 引き戻す | 3 | 4.12 |
| 正解 | 3 | 3.47 |
| 大人びる | 3 | 4.24 |
| どっちも | 3 | 4.07 |
| 酒池肉林 | 3 | 5.41 |
| 為になる | 3 | 4.41 |
| 手に余る | 3 | 4.73 |
| 万感 | 3 | 4.91 |
| 除く | 3 | 3.78 |
| 若しか | 3 | 4.45 |
| 上手 | 3 | 3.75 |
| 腰ぎんちゃく | 3 | 5.83 |
| そこら辺 | 3 | 3.84 |
| 馬上 | 3 | 3.94 |
| 候 | 3 | 4.09 |
| 見張る | 3 | 3.81 |
| 悪戦苦闘 | 3 | 4.93 |
| ミス | 3 | 3.74 |
| 精いっぱい | 3 | 4.50 |
| 冷める | 3 | 3.72 |
| 言い伝え | 3 | 4.51 |
| 手活け | 3 | 3.75 |
| 制限 | 3 | 3.52 |
| キノコ | 3 | 3.92 |
| 討つ | 3 | 3.74 |
| 表れ | 3 | 4.22 |
| 一室 | 3 | 3.82 |
| 飲ます | 3 | 4.45 |
| ハンドバッグ | 3 | 5.85 |
| 個目 | 3 | 4.09 |
| アゴ | 3 | 4.78 |
| 及び | 3 | 3.75 |
| 日差し | 3 | 4.04 |
| 反論 | 3 | 3.52 |
| 猛者 | 3 | 3.76 |
| うむ | 3 | 3.03 |
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