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 |
|---|---|---|
| 林 | 1 | 3.72 |
| フィアンセ | 1 | 5.27 |
| 巨大地震 | 1 | 6.28 |
| 追いやる | 1 | 4.06 |
| 軽々しい | 1 | 4.45 |
| づら | 1 | 4.63 |
| 個人 | 1 | 3.36 |
| 嗜好 | 1 | 4.59 |
| 湯種 | 1 | 5.32 |
| 揺ら揺ら | 1 | 4.28 |
| 自分勝手 | 1 | 4.29 |
| 喋る | 1 | 3.37 |
| 清々 | 1 | 5.20 |
| 負傷 | 1 | 3.90 |
| 尽く | 1 | 4.10 |
| バチン | 1 | 5.16 |
| メチャクチャ | 1 | 4.67 |
| バット | 1 | 4.29 |
| いい感じ | 1 | 4.05 |
| 音信不通 | 1 | 5.22 |
| ペア | 1 | 4.19 |
| 野生 | 1 | 3.95 |
| 後者 | 1 | 3.86 |
| 目録 | 1 | 4.58 |
| 痕 | 1 | 4.18 |
| 日用雑貨 | 1 | 5.54 |
| 剥く | 1 | 3.80 |
| 後部 | 1 | 4.51 |
| 種別 | 1 | 4.94 |
| 踏み抜く | 1 | 4.70 |
| レジ | 1 | 4.62 |
| 止まり | 1 | 3.89 |
| はきはき | 1 | 4.84 |
| 前掛け | 1 | 4.98 |
| 住み着く | 1 | 4.41 |
| 久しい | 1 | 4.27 |
| ツアー | 1 | 4.67 |
| 区別 | 1 | 4.02 |
| とろん | 1 | 5.30 |
| 飛躍 | 1 | 4.68 |
| 浴衣 | 1 | 4.38 |
| この先 | 1 | 3.52 |
| 偉く | 1 | 4.20 |
| 人間業 | 1 | 5.33 |
| 描写 | 1 | 4.16 |
| ボソッと | 1 | 4.76 |
| 意思表示 | 1 | 4.50 |
| 解放感 | 1 | 5.03 |
| お部屋 | 1 | 4.13 |
| 人道的 | 1 | 5.09 |
| 振り切る | 1 | 4.01 |
| 思い起こす | 1 | 4.33 |
| つかの間 | 1 | 4.74 |
| 踞る | 1 | 4.67 |
| 当番 | 1 | 4.40 |
| 武勲 | 1 | 4.61 |
| 反吐 | 1 | 5.05 |
| 奇跡的 | 1 | 4.45 |
| 有り | 1 | 3.97 |
| 蛇足 | 1 | 4.78 |
| 一号 | 1 | 4.42 |
| と金 | 1 | 4.40 |
| 西部 | 1 | 4.15 |
| 投げやり | 1 | 4.46 |
| 取り調べ | 1 | 4.63 |
| 兄貴分 | 1 | 4.93 |
| 唖 | 1 | 4.29 |
| 係の人 | 1 | 5.55 |
| もう一方 | 1 | 4.35 |
| 所属 | 1 | 3.37 |
| 荒業 | 1 | 5.05 |
| 苦しめる | 1 | 4.03 |
| 悔いる | 1 | 4.83 |
| 老師 | 1 | 4.55 |
| 平社員 | 1 | 5.66 |
| お知らせ | 1 | 4.09 |
| ケーブル | 1 | 4.88 |
| くう | 1 | 3.45 |
| 考え抜く | 1 | 5.02 |
| 一人歩き | 1 | 5.20 |
| 魚種 | 1 | 6.13 |
| 思考停止 | 1 | 4.84 |
| 足労 | 1 | 5.71 |
| 玉砕 | 1 | 4.82 |
| 直面 | 1 | 4.43 |
| ほやほや | 1 | 5.18 |
| 阿波踊り | 1 | 6.22 |
| エキサイト | 1 | 5.46 |
| ビーチク | 1 | 6.61 |
| 別なく | 1 | 5.64 |
| 討ち果たす | 1 | 4.81 |
| 軋む | 1 | 4.05 |
| 日時 | 1 | 4.60 |
| 押し絵 | 1 | 5.06 |
| 狼狽 | 1 | 4.20 |
| 一刻 | 1 | 4.39 |
| 寄越す | 1 | 3.88 |
| もさい | 1 | 5.79 |
| 下手 | 1 | 3.26 |
| 担保 | 1 | 4.68 |
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