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 |
|---|---|---|
| 大振り | 1 | 4.48 |
| 見てくれ | 1 | 4.01 |
| 兄さん | 1 | 3.38 |
| 派 | 1 | 3.22 |
| いつの日か | 1 | 4.75 |
| 教師 | 1 | 3.40 |
| 載る | 1 | 3.85 |
| ご苦労さん | 1 | 4.72 |
| ずんぐり | 1 | 4.99 |
| 捕食 | 1 | 3.84 |
| ダイブ | 1 | 4.44 |
| 純情 | 1 | 4.76 |
| 人らしい | 1 | 4.91 |
| 読める | 1 | 3.43 |
| 後難 | 1 | 5.25 |
| ことの他 | 1 | 5.19 |
| 金網 | 1 | 5.09 |
| 触れ合う | 1 | 4.26 |
| 戴く | 1 | 3.70 |
| 押し黙る | 1 | 4.15 |
| 器 | 1 | 3.42 |
| 関係者 | 1 | 3.56 |
| 顔合わせ | 1 | 4.25 |
| 荷渡し | 1 | 4.31 |
| デジャヴ | 1 | 5.23 |
| 突っ走る | 1 | 4.52 |
| 吊し | 1 | 5.29 |
| グリーン | 1 | 4.29 |
| 不足 | 1 | 3.57 |
| お嬢 | 1 | 3.75 |
| 会館 | 1 | 4.65 |
| ううん | 1 | 3.63 |
| 神聖視 | 1 | 5.21 |
| ゴツン | 1 | 5.49 |
| 欠けら | 1 | 4.37 |
| 降下 | 1 | 4.04 |
| 切り分ける | 1 | 4.12 |
| 実施 | 1 | 4.35 |
| 半開き | 1 | 4.62 |
| 首脳部 | 1 | 5.15 |
| 間近 | 1 | 3.76 |
| 目抜き通り | 1 | 5.27 |
| 耐え抜く | 1 | 4.94 |
| 自分から | 1 | 3.64 |
| 絶倫 | 1 | 5.63 |
| ソフトボール | 1 | 5.35 |
| 生計を立てる | 1 | 5.49 |
| トロ | 1 | 4.62 |
| ステータス | 1 | 2.82 |
| 貼りつく | 1 | 5.79 |
| 犠牲者 | 1 | 4.13 |
| 汲む | 1 | 4.08 |
| 文明 | 1 | 3.85 |
| 精巧 | 1 | 4.53 |
| 適齢期 | 1 | 5.01 |
| 口出し | 1 | 4.21 |
| 用途 | 1 | 4.03 |
| 均衡 | 1 | 4.25 |
| 立つ瀬がない | 1 | 5.34 |
| 抱き上げる | 1 | 3.94 |
| 日永 | 1 | 4.91 |
| 止む | 1 | 3.86 |
| 背もたれ | 1 | 4.31 |
| 手桶 | 1 | 5.38 |
| 平社員 | 1 | 5.66 |
| ヌメヌメ | 1 | 5.64 |
| つけ根 | 1 | 5.05 |
| 首を垂れる | 1 | 5.35 |
| 行き場 | 1 | 4.50 |
| 取り仕切る | 1 | 4.20 |
| 厳 | 1 | 4.50 |
| 集積 | 1 | 4.65 |
| フォーマルドレス | 1 | 6.89 |
| 熱さ | 1 | 4.35 |
| 煮込み | 1 | 4.33 |
| 恋い焦がれる | 1 | 5.23 |
| 地獄耳 | 1 | 5.20 |
| アリ | 1 | 3.56 |
| 生き物 | 1 | 3.36 |
| 湖底 | 1 | 5.06 |
| 身長 | 1 | 3.45 |
| 危険極まりない | 1 | 4.97 |
| 手に負えない | 1 | 4.60 |
| 栄養価 | 1 | 5.00 |
| 坐り | 1 | 5.20 |
| 長閑 | 1 | 4.43 |
| 鮮血 | 1 | 4.11 |
| ハツラツ | 1 | 5.79 |
| 梁 | 1 | 3.95 |
| 快打 | 1 | 5.51 |
| パチンコ屋 | 1 | 5.80 |
| 結納 | 1 | 5.32 |
| 雲行き | 1 | 5.01 |
| 天真爛漫 | 1 | 4.76 |
| 延び延び | 1 | 5.88 |
| スカスカ | 1 | 5.12 |
| 害獣 | 1 | 4.66 |
| 招き入れる | 1 | 4.25 |
| 足蹴 | 1 | 4.89 |
| 押し絵 | 1 | 5.06 |
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