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 |
|---|---|---|
| 公算 | 1 | 4.78 |
| 受け答え | 1 | 4.39 |
| ホテル | 1 | 3.86 |
| 老け顔 | 1 | 5.74 |
| 成績 | 1 | 3.82 |
| 息をひそめる | 1 | 5.80 |
| 掛かりきり | 1 | 5.02 |
| 突出し | 1 | 5.24 |
| スローダウン | 1 | 6.64 |
| ジジイ | 1 | 4.14 |
| 揉む | 1 | 3.94 |
| 追い出す | 1 | 3.77 |
| 慣れ親しむ | 1 | 4.52 |
| 時空 | 1 | 3.47 |
| 買取り | 1 | 5.27 |
| 長年 | 1 | 3.70 |
| 言いぶり | 1 | 6.05 |
| 雇われ | 1 | 4.26 |
| 露出狂 | 1 | 5.18 |
| 稽古着 | 1 | 6.20 |
| 釣竿 | 1 | 4.80 |
| 将来有望 | 1 | 4.69 |
| 速足 | 1 | 5.09 |
| 悲しむ | 1 | 3.90 |
| A | 1 | 3.50 |
| 番勝負 | 1 | 6.14 |
| 価格帯 | 1 | 5.73 |
| 最高責任者 | 1 | 4.91 |
| 後部 | 1 | 4.51 |
| 目の色 | 1 | 4.26 |
| 名づけ | 1 | 4.91 |
| とっとと | 1 | 3.96 |
| 約束どおり | 1 | 5.14 |
| 作す | 1 | 4.62 |
| 殺傷能力 | 1 | 4.83 |
| 客足 | 1 | 4.87 |
| 教師 | 1 | 3.40 |
| まやかし | 1 | 4.96 |
| のど越し | 1 | 5.63 |
| 平均的 | 1 | 4.42 |
| 快楽 | 1 | 4.44 |
| ぶるり | 1 | 4.74 |
| 通り越す | 1 | 4.07 |
| 半開き | 1 | 4.62 |
| 青春 | 1 | 4.22 |
| こぼれ落ちる | 1 | 4.44 |
| 聞き出す | 1 | 3.98 |
| 押し黙る | 1 | 4.15 |
| 会わせる | 1 | 4.33 |
| 手立て | 1 | 4.41 |
| 事あるごとに | 1 | 4.57 |
| 怖がる | 1 | 3.74 |
| お祝い | 1 | 3.97 |
| 死にかける | 1 | 4.10 |
| おんぶ | 1 | 4.75 |
| 愚鈍 | 1 | 4.75 |
| 膨らます | 1 | 4.97 |
| 有無を言わさず | 1 | 4.77 |
| 最前線 | 1 | 3.94 |
| 桁 | 1 | 4.16 |
| 判別 | 1 | 3.99 |
| 合意 | 1 | 4.47 |
| 射止める | 1 | 4.88 |
| 厚さ | 1 | 4.43 |
| 諸君 | 1 | 4.03 |
| 狂乱 | 1 | 4.48 |
| 入れ替わる | 1 | 4.14 |
| 労働力 | 1 | 4.49 |
| 格別 | 1 | 4.50 |
| 皆まで言うな | 1 | 5.61 |
| 同意 | 1 | 3.33 |
| 燃え盛る | 1 | 4.16 |
| バツ印 | 1 | 5.43 |
| 発案者 | 1 | 5.03 |
| 追い求める | 1 | 4.60 |
| 苦笑 | 1 | 3.03 |
| 足らず | 1 | 4.19 |
| 気が付く | 1 | 3.32 |
| 三十一日 | 1 | 5.48 |
| この度 | 1 | 3.88 |
| 全う | 1 | 4.18 |
| 火取蛾 | 1 | 4.29 |
| 博す | 1 | 4.66 |
| 非現実的 | 1 | 4.77 |
| 振り込む | 1 | 4.93 |
| 突っ込み | 1 | 3.83 |
| 何名 | 1 | 4.47 |
| 応用 | 1 | 3.85 |
| 珠玉 | 1 | 5.59 |
| 敏捷性 | 1 | 4.85 |
| 宝の山 | 1 | 4.98 |
| 顔を上げる | 1 | 3.78 |
| 横なぎ | 1 | 5.33 |
| 血筋 | 1 | 3.91 |
| 朝日 | 1 | 4.14 |
| 実質 | 1 | 4.08 |
| 外部 | 1 | 3.73 |
| 長閑 | 1 | 4.43 |
| ほえ面 | 1 | 6.12 |
| サイコー | 1 | 5.30 |
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