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 |
|---|---|---|
| 精鋭 | 3 | 3.84 |
| 渋い | 3 | 3.93 |
| 替え | 3 | 4.19 |
| 醜態 | 3 | 4.40 |
| ゴミ | 3 | 3.82 |
| 公の場 | 3 | 4.56 |
| 駐車場 | 3 | 4.54 |
| 神妙 | 3 | 4.02 |
| 英気 | 3 | 4.95 |
| 吭 | 3 | 3.81 |
| 奥行き | 3 | 4.87 |
| 原始 | 3 | 4.99 |
| そこら辺 | 3 | 3.84 |
| 未知 | 3 | 3.76 |
| かき消す | 3 | 4.23 |
| 怒号 | 3 | 4.11 |
| ポイ | 3 | 4.40 |
| ヒラメ | 3 | 5.37 |
| さあ | 3 | 3.10 |
| 年寄り | 3 | 4.29 |
| 本陣 | 3 | 3.99 |
| 曲がった | 3 | 4.30 |
| 引きしめる | 3 | 5.67 |
| 何だい | 3 | 3.95 |
| 市街 | 3 | 4.57 |
| 採れる | 3 | 4.11 |
| 一から | 3 | 4.17 |
| アドバイス | 3 | 3.90 |
| あはははは | 3 | 4.27 |
| 丸 | 3 | 3.59 |
| 預ける | 3 | 3.74 |
| 徴兵 | 3 | 4.59 |
| 原理 | 3 | 4.08 |
| 鮮明 | 3 | 4.18 |
| 安定 | 3 | 3.59 |
| 突進 | 3 | 3.63 |
| 揺る | 3 | 3.68 |
| 帯剣 | 3 | 4.81 |
| 手持ち | 3 | 3.96 |
| 担ぎ | 3 | 4.22 |
| 飛びたつ | 3 | 5.86 |
| 村 | 3 | 2.56 |
| まい | 3 | 3.58 |
| 堂々 | 3 | 3.53 |
| お疲れ様 | 3 | 3.73 |
| 承諾 | 3 | 4.02 |
| 貝 | 3 | 4.21 |
| 要所要所 | 3 | 4.83 |
| その手 | 3 | 3.34 |
| 利用価値 | 3 | 4.53 |
| ついて行く | 3 | 3.82 |
| 的射 | 3 | 4.58 |
| 歩き回る | 3 | 4.10 |
| 離す | 3 | 3.22 |
| なぞる | 3 | 4.09 |
| 上方 | 3 | 4.49 |
| 悩み | 3 | 3.65 |
| 比 | 3 | 3.96 |
| 表れ | 3 | 4.22 |
| 座り込む | 3 | 3.74 |
| 討つ | 3 | 3.74 |
| 誰でも | 3 | 3.66 |
| 高官 | 3 | 4.68 |
| 定め | 3 | 3.97 |
| 選抜 | 3 | 4.36 |
| 葉 | 3 | 3.51 |
| 神々しい | 3 | 4.15 |
| ふかふか | 3 | 4.41 |
| 負い目 | 3 | 4.53 |
| 飲み水 | 3 | 4.79 |
| 紐 | 3 | 3.82 |
| ○ | 3 | 3.50 |
| 実をいうと | 3 | 5.50 |
| 襟 | 3 | 4.34 |
| 一刀両断 | 3 | 4.50 |
| 年季 | 3 | 4.60 |
| 切っ先 | 3 | 3.89 |
| 心中 | 3 | 4.01 |
| 対 | 3 | 3.38 |
| スパイス | 3 | 4.43 |
| 興味津々 | 3 | 4.06 |
| 外側 | 3 | 3.85 |
| 派遣 | 3 | 3.51 |
| ラフ | 3 | 4.24 |
| してもいい | 3 | 3.90 |
| 凝視 | 3 | 3.85 |
| 湯気 | 3 | 4.04 |
| 新調 | 3 | 4.43 |
| 降る | 3 | 3.80 |
| や否や | 3 | 4.06 |
| 囮 | 3 | 3.85 |
| 挑発 | 3 | 3.71 |
| でない | 3 | 3.36 |
| 引っ込む | 3 | 4.05 |
| 区画整理 | 3 | 5.27 |
| 森の奥 | 3 | 4.09 |
| 絵 | 3 | 3.44 |
| だけでいい | 3 | 4.04 |
| 困ったことに | 3 | 4.65 |
| 容赦なく | 3 | 3.80 |
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