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 |
|---|---|---|
| 問題点 | 1 | 4.29 |
| 満腹感 | 1 | 5.25 |
| 陰鬱 | 1 | 4.63 |
| 建国 | 1 | 3.98 |
| 跨ぐ | 1 | 4.36 |
| と言っても過言ではない | 1 | 4.27 |
| お仕事 | 1 | 3.73 |
| 熱さ | 1 | 4.35 |
| まな板の上のコイ | 1 | 7.29 |
| 目じり | 1 | 4.98 |
| オレンジ色 | 1 | 4.35 |
| 老紳士 | 1 | 4.77 |
| 宜しければ | 1 | 3.89 |
| 自重 | 1 | 3.97 |
| 聞き入れる | 1 | 4.27 |
| 掃除 | 1 | 3.48 |
| ボウ | 1 | 4.75 |
| 下草 | 1 | 4.95 |
| 正気 | 1 | 3.67 |
| ズル | 1 | 4.39 |
| 秋田 | 1 | 5.38 |
| よりか | 1 | 4.47 |
| とどのつまり | 1 | 5.35 |
| 非常事態 | 1 | 4.64 |
| 遠ざかる | 1 | 3.90 |
| 坂 | 1 | 3.76 |
| 分担 | 1 | 4.51 |
| 達者 | 1 | 4.57 |
| 用心 | 1 | 4.26 |
| お代 | 1 | 4.74 |
| 低空飛行 | 1 | 5.05 |
| 狭める | 1 | 4.59 |
| 束ね | 1 | 4.35 |
| 生温かい | 1 | 4.68 |
| つかつか | 1 | 4.70 |
| 流される | 1 | 4.36 |
| すっと | 1 | 3.91 |
| 諭す | 1 | 4.07 |
| 清め | 1 | 4.56 |
| 始まり | 1 | 3.52 |
| 道なき道 | 1 | 5.07 |
| 悦に入る | 1 | 5.12 |
| 酒臭い | 1 | 5.02 |
| 八月 | 1 | 4.62 |
| 硬 | 1 | 4.24 |
| 稀薄 | 1 | 6.22 |
| 零 | 1 | 4.17 |
| とことん | 1 | 4.30 |
| 節理 | 1 | 6.18 |
| 不覚 | 1 | 4.64 |
| 聞き出す | 1 | 3.98 |
| 不味い | 1 | 3.21 |
| 世間話 | 1 | 4.17 |
| 今更ながら | 1 | 4.17 |
| 決め込む | 1 | 4.45 |
| 付いてる | 1 | 3.92 |
| 弁舌 | 1 | 5.11 |
| 切り返す | 1 | 4.82 |
| 質の高い | 1 | 5.32 |
| と金 | 1 | 4.40 |
| 陸橋 | 1 | 6.05 |
| 二度三度 | 1 | 4.94 |
| 天職 | 1 | 4.34 |
| おどおど | 1 | 4.61 |
| シャキシャキ | 1 | 5.19 |
| 公平 | 1 | 4.30 |
| 即断即決 | 1 | 5.21 |
| 強固 | 1 | 3.94 |
| 機械類 | 1 | 5.72 |
| 呼びつける | 1 | 4.39 |
| 衣服 | 1 | 3.77 |
| 幾度となく | 1 | 4.27 |
| 混ぜる | 1 | 3.60 |
| もんだから | 1 | 4.16 |
| ぎこちない | 1 | 4.12 |
| 聴こえる | 1 | 4.56 |
| 動体視力 | 1 | 4.65 |
| 剣術 | 1 | 3.52 |
| 言ってのける | 1 | 4.81 |
| 照射 | 1 | 4.69 |
| 芝 | 1 | 4.67 |
| 平 | 1 | 4.03 |
| 振り回す | 1 | 3.42 |
| 山ほど | 1 | 4.16 |
| 息を合わせる | 1 | 5.97 |
| ようと | 1 | 4.57 |
| 追いかけっこ | 1 | 4.50 |
| 休ませる | 1 | 4.74 |
| 神聖視 | 1 | 5.21 |
| 肩紐 | 1 | 5.47 |
| 歯 | 1 | 3.47 |
| 左様 | 1 | 4.27 |
| こぼす | 1 | 3.93 |
| 念のため | 1 | 3.66 |
| 直線距離 | 1 | 4.96 |
| 破損 | 1 | 4.22 |
| ファイア | 1 | 4.04 |
| 大魚 | 1 | 5.39 |
| 出来具合 | 1 | 5.74 |
| 一悶着 | 1 | 4.85 |
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