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 |
|---|---|---|
| 鹿肉 | 1 | 5.03 |
| かなぐり捨てる | 1 | 4.89 |
| 同族 | 1 | 4.11 |
| ビリビリ | 1 | 4.51 |
| 羞恥心 | 1 | 4.42 |
| 戦時 | 1 | 4.52 |
| 美少年 | 1 | 4.35 |
| ナンボ | 1 | 5.45 |
| 切りかえる | 1 | 5.96 |
| 雄弁 | 1 | 4.60 |
| 露出狂 | 1 | 5.18 |
| 眼中にない | 1 | 4.91 |
| かさ張る | 1 | 5.10 |
| 劣勢 | 1 | 4.26 |
| 棒 | 1 | 3.51 |
| 勢力 | 1 | 3.53 |
| 別途 | 1 | 4.51 |
| に限らず | 1 | 4.24 |
| スッと | 1 | 4.17 |
| 目を丸くする | 1 | 4.22 |
| 怖い顔 | 1 | 4.38 |
| 握らせる | 1 | 5.06 |
| 焼酎 | 1 | 4.90 |
| 山裾 | 1 | 5.18 |
| 体で覚える | 1 | 6.07 |
| 火の玉 | 1 | 4.19 |
| ブリ | 1 | 4.77 |
| 堕天使 | 1 | 4.33 |
| 軟 | 1 | 5.26 |
| 女性経験 | 1 | 5.60 |
| 酔っぱらう | 1 | 4.71 |
| 予兆 | 1 | 4.60 |
| 血のにじむよう | 1 | 5.80 |
| 偉業 | 1 | 4.36 |
| ってことは | 1 | 3.48 |
| 荒業 | 1 | 5.05 |
| 愚図る | 1 | 5.21 |
| 感づく | 1 | 4.59 |
| 切っても切れない | 1 | 5.35 |
| つゆ知らず | 1 | 5.42 |
| 狐 | 1 | 3.42 |
| 許容範囲 | 1 | 4.56 |
| お祭り騒ぎ | 1 | 4.64 |
| 風邪をひく | 1 | 5.42 |
| 嗚咽 | 1 | 4.20 |
| 単刀直入 | 1 | 4.39 |
| 嘗 | 1 | 4.42 |
| 有難い | 1 | 4.05 |
| 複合 | 1 | 4.21 |
| 捕食 | 1 | 3.84 |
| 亡き者 | 1 | 4.86 |
| 真鍮製 | 1 | 5.65 |
| 実によく | 1 | 5.29 |
| 技量 | 1 | 3.71 |
| 銀行 | 1 | 4.30 |
| 燃料 | 1 | 4.07 |
| しなやか | 1 | 4.30 |
| 呑気 | 1 | 4.07 |
| 不得手 | 1 | 4.78 |
| 一読 | 1 | 5.09 |
| 友達付き合い | 1 | 5.65 |
| 外部 | 1 | 3.73 |
| 応用 | 1 | 3.85 |
| 筬 | 1 | 5.18 |
| ポロシャツ | 1 | 5.89 |
| 真横 | 1 | 4.14 |
| 石川県 | 1 | 6.24 |
| くるり | 1 | 3.94 |
| ひそひそ | 1 | 4.50 |
| 取り残す | 1 | 4.19 |
| 振りまく | 1 | 4.31 |
| 泥路 | 1 | 4.73 |
| 失血 | 1 | 5.26 |
| 足もと | 1 | 4.59 |
| 狭める | 1 | 4.59 |
| ぐるりと | 1 | 4.00 |
| 壁面 | 1 | 4.29 |
| 大ぶり | 1 | 4.86 |
| 物語 | 1 | 3.37 |
| じゃん | 1 | 3.55 |
| 何時になく | 1 | 4.31 |
| 立て替える | 1 | 5.69 |
| 静観 | 1 | 4.50 |
| 突っ込み | 1 | 3.83 |
| 指定校 | 1 | 4.61 |
| 旗 | 1 | 3.80 |
| 小高い | 1 | 5.06 |
| あやつ | 1 | 4.15 |
| 筋肉痛 | 1 | 4.47 |
| 流れ込む | 1 | 3.96 |
| 行方不明者 | 1 | 4.83 |
| 置いて行く | 1 | 4.87 |
| 栄える | 1 | 4.70 |
| 前掛け | 1 | 4.98 |
| 濁る | 1 | 4.15 |
| 特権階級 | 1 | 4.88 |
| 優る | 1 | 4.14 |
| 新郎新婦 | 1 | 4.93 |
| 併設 | 1 | 4.55 |
| 見かけ上 | 1 | 5.60 |
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