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 |
|---|---|---|
| 負わす | 1 | 4.67 |
| だの | 1 | 3.51 |
| 揺ら揺ら | 1 | 4.28 |
| 三社 | 1 | 4.45 |
| 見越し | 1 | 4.26 |
| 塩味 | 1 | 4.69 |
| たび重なる | 1 | 6.16 |
| 一年間 | 1 | 4.49 |
| 何一つ | 1 | 3.88 |
| 以後 | 1 | 4.10 |
| 追っ | 1 | 5.13 |
| 不祥事 | 1 | 4.82 |
| 素 | 1 | 3.29 |
| 申し | 1 | 4.18 |
| 根競べ | 1 | 5.71 |
| 誇り高き | 1 | 4.63 |
| 満場一致 | 1 | 4.84 |
| 同情 | 1 | 3.64 |
| 税 | 1 | 4.00 |
| 係の人 | 1 | 5.55 |
| 三山 | 1 | 4.20 |
| もさい | 1 | 5.79 |
| ヘビ | 1 | 4.34 |
| 気持ちよい | 1 | 4.24 |
| ママ | 1 | 3.75 |
| 弱い者 | 1 | 4.73 |
| 驚くほど | 1 | 4.05 |
| ショートパンツ | 1 | 5.03 |
| 皆様 | 1 | 3.43 |
| 余力 | 1 | 4.29 |
| 飛び道具 | 1 | 4.56 |
| 目論見 | 1 | 4.21 |
| 亀の歩み | 1 | 5.73 |
| 発案者 | 1 | 5.03 |
| 装着 | 1 | 3.89 |
| お盆 | 1 | 4.33 |
| 基準 | 1 | 3.71 |
| ザックザック | 1 | 6.09 |
| 陰謀 | 1 | 4.28 |
| 朝一 | 1 | 4.76 |
| 怪異 | 1 | 4.64 |
| 当たり障りのない | 1 | 4.67 |
| 種別 | 1 | 4.94 |
| 発意 | 1 | 3.84 |
| 如何なく | 1 | 5.25 |
| トロい | 1 | 5.84 |
| 一瞬にして | 1 | 3.88 |
| 泉 | 1 | 3.74 |
| ものの見事に | 1 | 5.05 |
| 丸々 | 1 | 4.39 |
| 去り際 | 1 | 4.61 |
| そういうもん | 1 | 4.57 |
| 干支 | 1 | 3.94 |
| おーい | 1 | 4.00 |
| 愚 | 1 | 4.39 |
| 歯抜け | 1 | 5.69 |
| 均し | 1 | 5.02 |
| みそ | 1 | 5.42 |
| 夕食後 | 1 | 4.59 |
| 恐れがある | 1 | 4.40 |
| 侮る | 1 | 3.98 |
| ただ事 | 1 | 4.80 |
| 同義 | 1 | 4.38 |
| ぬるぬる | 1 | 5.24 |
| 保持 | 1 | 4.11 |
| そっちのけ | 1 | 4.75 |
| 巡り合う | 1 | 5.08 |
| 揺れる | 1 | 3.45 |
| 冊 | 1 | 4.22 |
| 尻尾 | 1 | 3.15 |
| お喋り | 1 | 3.88 |
| 花火 | 1 | 4.08 |
| 円ら | 1 | 4.48 |
| 自重 | 1 | 3.97 |
| 五度 | 1 | 5.03 |
| 腰が抜ける | 1 | 5.76 |
| ブルブル | 1 | 4.73 |
| 時空 | 1 | 3.47 |
| 凝らす | 1 | 4.08 |
| 驚くべき | 1 | 4.09 |
| 目する | 1 | 5.73 |
| オッサン | 1 | 3.93 |
| ガソリン | 1 | 4.83 |
| 冠辞 | 1 | 4.73 |
| 目盛 | 1 | 5.92 |
| 溜めこむ | 1 | 5.09 |
| てな | 1 | 3.27 |
| びしびし | 1 | 5.11 |
| 快楽 | 1 | 4.44 |
| 一場面 | 1 | 5.43 |
| 語彙力 | 1 | 5.29 |
| 東側 | 1 | 4.17 |
| ワインレッド | 1 | 5.09 |
| その他もろもろ | 1 | 5.13 |
| 楽勝 | 1 | 4.27 |
| 調味料 | 1 | 4.00 |
| 掠る | 1 | 4.53 |
| 指揮権 | 1 | 4.56 |
| 適齢期 | 1 | 5.01 |
| 一苦労 | 1 | 4.51 |
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