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 |
|---|---|---|
| 景気よく | 1 | 5.29 |
| 予期 | 1 | 4.30 |
| 分だけ | 1 | 4.01 |
| 走り続ける | 1 | 4.72 |
| 丸腰 | 1 | 4.80 |
| ナイスバディ | 1 | 5.28 |
| 三度 | 1 | 4.06 |
| オーバー | 1 | 4.34 |
| 見逃し | 1 | 3.99 |
| 支持 | 1 | 3.96 |
| 断り | 1 | 4.01 |
| ピクピク | 1 | 4.52 |
| 掻い出す | 1 | 6.89 |
| 湖底 | 1 | 5.06 |
| 残忍 | 1 | 4.77 |
| 下欄 | 1 | 4.87 |
| ぐさりと | 1 | 5.59 |
| 状況判断 | 1 | 4.88 |
| 載せる | 1 | 3.79 |
| 褒め言葉 | 1 | 4.39 |
| じゃん | 1 | 3.55 |
| 言い繕う | 1 | 5.10 |
| 観客 | 1 | 3.64 |
| 夜遅く | 1 | 4.46 |
| 祈り | 1 | 3.60 |
| 如何わしい | 1 | 4.75 |
| 抜きんでる | 1 | 5.22 |
| 心配性 | 1 | 4.51 |
| に似て | 1 | 3.66 |
| いけ好かない | 1 | 4.87 |
| 踊る | 1 | 3.51 |
| 爆発的 | 1 | 4.23 |
| 作り笑い | 1 | 4.92 |
| 血液 | 1 | 3.95 |
| 当前 | 1 | 5.37 |
| 生計を立てる | 1 | 5.49 |
| 相手側 | 1 | 4.56 |
| 競争率 | 1 | 5.30 |
| 断ち切る | 1 | 4.09 |
| 掃除 | 1 | 3.48 |
| 居住 | 1 | 4.50 |
| 言葉通り | 1 | 3.92 |
| 部外者 | 1 | 4.21 |
| 大海 | 1 | 4.74 |
| 行き違い | 1 | 4.90 |
| もんですか | 1 | 5.07 |
| 同年代 | 1 | 4.12 |
| 天恵 | 1 | 4.89 |
| 貪欲 | 1 | 4.49 |
| 行きつく | 1 | 4.82 |
| シソ | 1 | 5.73 |
| 故に | 1 | 3.04 |
| 伺い | 1 | 4.41 |
| 売り込む | 1 | 4.69 |
| 居候 | 1 | 4.64 |
| 移ろう | 1 | 4.70 |
| 中心地 | 1 | 4.62 |
| 欠けら | 1 | 4.37 |
| つき合う | 1 | 4.70 |
| 鈍ら | 1 | 4.53 |
| であるから | 1 | 3.77 |
| 好条件 | 1 | 4.81 |
| 現役 | 1 | 4.17 |
| 肺 | 1 | 4.14 |
| 成立 | 1 | 3.73 |
| 刃こぼれ | 1 | 4.81 |
| 尚且つ | 1 | 3.83 |
| 三和土 | 1 | 4.64 |
| 踏ん張る | 1 | 4.28 |
| 立ち入る | 1 | 4.31 |
| 天蛾 | 1 | 5.63 |
| 恥ずかしながら | 1 | 4.62 |
| 数分 | 1 | 3.87 |
| 先頭に立つ | 1 | 4.78 |
| 封じる | 1 | 3.58 |
| せえ | 1 | 4.65 |
| もしかしなくても | 1 | 4.60 |
| 返金 | 1 | 5.26 |
| おいおい | 1 | 3.46 |
| 活用 | 1 | 3.83 |
| ブーツ | 1 | 4.03 |
| 絶倫 | 1 | 5.63 |
| 追い出す | 1 | 3.77 |
| カシオペア | 1 | 6.59 |
| 真鍮製 | 1 | 5.65 |
| 旗 | 1 | 3.80 |
| 如何なく | 1 | 5.25 |
| 親交を深める | 1 | 5.34 |
| 軟体動物 | 1 | 5.59 |
| 配布 | 1 | 4.51 |
| 目元 | 1 | 3.93 |
| 分り | 1 | 5.35 |
| 貫禄 | 1 | 4.56 |
| 一往 | 1 | 4.40 |
| つゆ知らず | 1 | 5.42 |
| 反射 | 1 | 3.76 |
| ヒラヒラ | 1 | 4.63 |
| 大違い | 1 | 4.43 |
| 残りかす | 1 | 5.83 |
| たんまり | 1 | 4.90 |
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