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 |
|---|---|---|
| どす黒い | 5 | 4.42 |
| 険しい | 5 | 3.94 |
| 痕跡 | 5 | 3.90 |
| 例年 | 5 | 4.53 |
| お互い | 5 | 3.30 |
| 争闘 | 5 | 4.78 |
| でなければ | 5 | 3.51 |
| 透明 | 5 | 3.71 |
| 寝床 | 5 | 4.05 |
| 変態 | 5 | 3.55 |
| 見下す | 5 | 3.89 |
| 散らす | 5 | 3.89 |
| 増して | 5 | 3.73 |
| 生じる | 5 | 3.47 |
| 正座 | 5 | 4.08 |
| 悶々 | 5 | 4.65 |
| 極めて | 5 | 3.49 |
| 応える | 5 | 3.51 |
| 子種 | 5 | 5.17 |
| 早々 | 5 | 3.54 |
| ケガ | 5 | 4.21 |
| 見送り | 5 | 3.75 |
| 克服 | 5 | 4.32 |
| ホントに | 5 | 3.85 |
| 振る舞い | 5 | 3.85 |
| 頭上 | 5 | 3.41 |
| 極々 | 5 | 4.60 |
| 法案 | 5 | 5.15 |
| 化粧 | 5 | 4.00 |
| 異端 | 5 | 3.26 |
| 責任者 | 5 | 3.92 |
| 職員 | 5 | 3.41 |
| 伺う | 5 | 3.58 |
| 神 | 5 | 2.42 |
| 加速 | 5 | 3.47 |
| 下民 | 5 | 5.33 |
| 一国 | 5 | 3.97 |
| 足の裏 | 5 | 4.56 |
| 充実 | 5 | 3.94 |
| 定期的 | 5 | 3.83 |
| 意思 | 5 | 3.20 |
| 青ざめる | 5 | 3.86 |
| か所 | 5 | 4.76 |
| 手おけ | 5 | 3.35 |
| 気持ちよく | 5 | 4.45 |
| 小遣い | 5 | 4.49 |
| あっさり | 5 | 3.15 |
| 守衛所 | 5 | 6.21 |
| 政治家 | 5 | 4.19 |
| 長話 | 5 | 4.78 |
| 大切 | 5 | 3.25 |
| 散らし | 5 | 3.73 |
| バレる | 5 | 3.43 |
| ドレス | 5 | 3.23 |
| 支柱 | 5 | 4.56 |
| 見上げる | 5 | 3.03 |
| 漆黒 | 5 | 3.61 |
| もんじゃ | 5 | 3.76 |
| 防ぐ | 5 | 3.23 |
| 争い | 5 | 3.58 |
| 影響 | 5 | 3.05 |
| 実体 | 5 | 4.18 |
| ジリジリ | 5 | 4.53 |
| バランス | 5 | 3.55 |
| 浸かる | 5 | 4.01 |
| 忠告 | 5 | 3.72 |
| からに | 4 | 3.79 |
| やっぱ | 4 | 3.52 |
| 材料 | 4 | 3.36 |
| 気合 | 4 | 3.69 |
| 有意義 | 4 | 4.32 |
| 単独で | 4 | 3.96 |
| 和風 | 4 | 4.52 |
| 対して | 4 | 3.82 |
| 参った | 4 | 4.01 |
| 指揮を執る | 4 | 4.66 |
| 見目麗しい | 4 | 4.57 |
| 賑わい | 4 | 4.35 |
| 宣言 | 4 | 3.25 |
| 通例 | 4 | 4.69 |
| やけに | 4 | 3.73 |
| 深める | 4 | 3.69 |
| 何気に | 4 | 4.22 |
| 恍惚 | 4 | 4.37 |
| 発見者 | 4 | 4.96 |
| みたいです | 4 | 3.46 |
| 預かる | 4 | 3.59 |
| 姫君 | 4 | 3.95 |
| とか何とか | 4 | 4.08 |
| どちらか | 4 | 3.67 |
| 骨 | 4 | 3.21 |
| がれ | 4 | 3.99 |
| 子 | 4 | 2.51 |
| 飲み | 4 | 3.48 |
| 吹っ切れる | 4 | 4.56 |
| 縫う | 4 | 3.95 |
| 小型 | 4 | 3.70 |
| 道具 | 4 | 3.19 |
| 大好物 | 4 | 4.58 |
| 槍 | 4 | 2.74 |
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