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 |
|---|---|---|
| 孕む | 4 | 4.21 |
| 担ぐ | 4 | 4.10 |
| 稀 | 4 | 3.91 |
| 効率的 | 4 | 4.08 |
| 膨れ | 4 | 3.99 |
| 一級 | 4 | 4.41 |
| 筋 | 4 | 3.68 |
| 岩肌 | 4 | 4.50 |
| 両側 | 4 | 4.35 |
| やっぱ | 4 | 3.52 |
| 両目 | 4 | 4.25 |
| 先端 | 4 | 3.65 |
| 山道 | 4 | 4.20 |
| 土筆 | 4 | 4.40 |
| 良ければ | 4 | 3.76 |
| 出来事 | 4 | 3.32 |
| うふふ | 4 | 3.92 |
| 両肩 | 4 | 4.21 |
| 雪だるま | 4 | 4.75 |
| 特殊 | 4 | 3.22 |
| 授ける | 4 | 3.93 |
| 個体 | 4 | 3.56 |
| 回避 | 4 | 2.93 |
| 子 | 4 | 2.51 |
| 頷ける | 4 | 4.19 |
| 俗 | 4 | 5.01 |
| 道具 | 4 | 3.19 |
| 余波 | 4 | 4.06 |
| 維持費 | 4 | 4.79 |
| 運よく | 4 | 4.57 |
| 一目 | 4 | 3.72 |
| 押し込む | 4 | 3.92 |
| 十倍 | 4 | 4.40 |
| 快く | 4 | 4.08 |
| 系 | 4 | 2.92 |
| 微笑む | 4 | 3.01 |
| 恍惚 | 4 | 4.37 |
| 最後尾 | 4 | 4.20 |
| 華やか | 4 | 4.02 |
| 世襲制 | 4 | 5.46 |
| 見すぼらしい | 4 | 4.64 |
| 良好 | 4 | 4.06 |
| 五分 | 4 | 3.87 |
| やがる | 4 | 3.67 |
| 収める | 4 | 3.79 |
| 輩 | 4 | 3.75 |
| ランク | 4 | 2.85 |
| 強者 | 4 | 3.73 |
| 横手 | 4 | 5.00 |
| 踏む | 4 | 3.32 |
| 誰だって | 4 | 4.04 |
| 明るい | 4 | 3.19 |
| 撃つ | 4 | 3.27 |
| 色んな | 4 | 3.36 |
| 元い | 4 | 4.01 |
| 屈強 | 4 | 4.12 |
| 今すぐ | 4 | 3.54 |
| 振り分け | 4 | 4.66 |
| いい人 | 4 | 4.21 |
| 小さめ | 4 | 4.41 |
| 半 | 4 | 3.51 |
| 案の定 | 4 | 3.83 |
| ギア | 4 | 4.12 |
| 差し置く | 4 | 4.50 |
| 財宝 | 4 | 4.20 |
| 派閥 | 4 | 3.69 |
| 凛々しい | 4 | 4.11 |
| 思考 | 4 | 3.07 |
| 籠る | 4 | 3.91 |
| 快諾 | 4 | 4.54 |
| 人生経験 | 4 | 4.89 |
| 資金 | 4 | 3.71 |
| 旗頭 | 4 | 4.92 |
| 日課 | 4 | 4.28 |
| 二階建て | 4 | 4.63 |
| 際 | 4 | 3.36 |
| 食器 | 4 | 3.99 |
| 志願 | 4 | 4.39 |
| 髪の毛 | 4 | 3.78 |
| 下す | 4 | 3.54 |
| 話し込む | 4 | 4.37 |
| 便利 | 4 | 3.35 |
| 負ける | 4 | 3.03 |
| 恐れ | 4 | 3.43 |
| 占める | 4 | 3.97 |
| 老け | 4 | 4.90 |
| 空腹 | 4 | 4.02 |
| 異能 | 4 | 3.99 |
| 陽光 | 4 | 4.18 |
| 掛け声 | 4 | 4.15 |
| 釜師 | 4 | 4.47 |
| 事務 | 4 | 4.39 |
| ざっと | 4 | 3.99 |
| 心情 | 4 | 3.87 |
| 敢えて | 4 | 3.31 |
| その道 | 4 | 4.27 |
| 性質 | 4 | 3.54 |
| 光沢 | 4 | 4.32 |
| 草原 | 4 | 3.51 |
| 弟 | 4 | 3.14 |
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