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 |
|---|---|---|
| 貴重品 | 3 | 4.57 |
| に従い | 3 | 3.80 |
| 一際 | 3 | 3.81 |
| 至福感 | 3 | 6.89 |
| その手 | 3 | 3.34 |
| はあ | 3 | 3.26 |
| 好み | 3 | 3.52 |
| 一閃 | 3 | 3.92 |
| 跳ね上がる | 3 | 4.06 |
| 婆さん | 3 | 3.91 |
| 超高 | 3 | 5.06 |
| 小さいころ | 3 | 4.88 |
| 専門書 | 3 | 5.27 |
| に限って | 3 | 3.95 |
| 曲がりくねる | 3 | 4.92 |
| 驚かす | 3 | 4.05 |
| 自負 | 3 | 4.05 |
| のそりのそり | 3 | 5.91 |
| さえも | 3 | 3.68 |
| 限定 | 3 | 3.71 |
| 騒ぎ | 3 | 3.37 |
| そうしたら | 3 | 3.96 |
| 深刻 | 3 | 3.83 |
| 打ち合わせる | 3 | 4.71 |
| なぞる | 3 | 4.09 |
| 八割 | 3 | 4.53 |
| 己 | 3 | 3.00 |
| 可哀そう | 3 | 4.05 |
| 小さい頃 | 3 | 4.07 |
| 壊れる | 3 | 3.33 |
| 試みる | 3 | 3.89 |
| 添える | 3 | 3.65 |
| 上質 | 3 | 4.33 |
| 憎たらしい | 3 | 4.64 |
| Ω | 3 | 4.93 |
| 公の場 | 3 | 4.56 |
| 掛ける | 3 | 3.30 |
| 出ていく | 3 | 3.96 |
| 咆哮 | 3 | 3.55 |
| 焼き牡蠣 | 3 | 6.31 |
| 循環 | 3 | 4.00 |
| 発端 | 3 | 4.37 |
| 塞ぐ | 3 | 3.51 |
| 発想 | 3 | 3.73 |
| とすると | 3 | 3.56 |
| 雑音 | 3 | 4.63 |
| 踏み入れる | 3 | 3.82 |
| ほれ | 3 | 3.95 |
| 駅 | 3 | 3.98 |
| 突進 | 3 | 3.63 |
| 年金 | 3 | 5.04 |
| 容赦 | 3 | 3.63 |
| 要所要所 | 3 | 4.83 |
| 毎晩 | 3 | 4.37 |
| 足し | 3 | 4.22 |
| 乗り | 3 | 3.70 |
| 勇気 | 3 | 3.56 |
| 洞窟 | 3 | 3.22 |
| ホヤ | 3 | 5.58 |
| 合図 | 3 | 3.43 |
| 懐 | 3 | 3.44 |
| 病む | 3 | 4.31 |
| 混じる | 3 | 3.46 |
| 指摘 | 3 | 3.38 |
| 採れる | 3 | 4.11 |
| 正しい | 3 | 3.12 |
| 見分け | 3 | 4.26 |
| 場面 | 3 | 3.55 |
| 布 | 3 | 3.21 |
| 前日 | 3 | 4.05 |
| 厭がる | 3 | 4.39 |
| 捻り | 3 | 4.12 |
| そら | 3 | 3.46 |
| 微妙 | 3 | 3.20 |
| 注ぐ | 3 | 3.35 |
| 誘い | 3 | 3.82 |
| 至福 | 3 | 4.55 |
| 砂地 | 3 | 4.76 |
| 声高 | 3 | 4.53 |
| お疲れ様 | 3 | 3.73 |
| 容赦なく | 3 | 3.80 |
| こら | 3 | 3.74 |
| 複雑 | 3 | 3.34 |
| よって | 3 | 3.62 |
| 風情 | 3 | 3.99 |
| 輸入 | 3 | 4.37 |
| 貴族階級 | 3 | 4.86 |
| 避難 | 3 | 3.64 |
| 決意 | 3 | 3.41 |
| 睨む | 3 | 3.25 |
| 傾き | 3 | 4.25 |
| 引き渡し | 3 | 4.48 |
| 日本海 | 3 | 5.44 |
| 幾分 | 3 | 4.07 |
| 仕草 | 3 | 3.50 |
| 海側 | 3 | 5.07 |
| 考え直す | 3 | 4.34 |
| ってな | 3 | 3.50 |
| 大半 | 3 | 3.47 |
| 高校 | 3 | 3.71 |
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