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 |
|---|---|---|
| 武勲 | 1 | 4.61 |
| オールバック | 1 | 4.72 |
| 外装 | 1 | 4.32 |
| 軽量 | 1 | 4.43 |
| 出端 | 1 | 4.63 |
| 陸橋 | 1 | 6.05 |
| 店内 | 1 | 3.76 |
| 千年 | 1 | 3.80 |
| オジサン | 1 | 4.73 |
| 東西 | 1 | 4.31 |
| 発音 | 1 | 4.29 |
| 愛でる | 1 | 4.22 |
| 程よい | 1 | 4.55 |
| ワンシーン | 1 | 5.07 |
| 物理 | 1 | 3.28 |
| すっごい | 1 | 4.09 |
| 九十 | 1 | 4.33 |
| 大粒 | 1 | 4.41 |
| 引き立てる | 1 | 4.95 |
| 年弱 | 1 | 5.67 |
| 何げなく | 1 | 5.41 |
| 電気 | 1 | 4.05 |
| ガマン | 1 | 5.22 |
| 砂煙 | 1 | 4.65 |
| 唐菜 | 1 | 5.68 |
| 赤々 | 1 | 4.78 |
| 合意 | 1 | 4.47 |
| 低学年 | 1 | 4.99 |
| じゃねえ | 1 | 3.34 |
| 荒げる | 1 | 4.56 |
| 剥く | 1 | 3.80 |
| 露骨 | 1 | 3.94 |
| 日永 | 1 | 4.91 |
| 泣きつく | 1 | 4.48 |
| 義理 | 1 | 3.91 |
| 余儀なく | 1 | 4.55 |
| 余所余所しい | 1 | 5.09 |
| 太刀 | 1 | 4.08 |
| しーっ | 1 | 5.24 |
| 立ち話 | 1 | 4.50 |
| 景品 | 1 | 4.77 |
| 声を上げる | 1 | 3.56 |
| 設備 | 1 | 3.81 |
| 重ね合わせ | 1 | 5.06 |
| 目を見張る | 1 | 4.40 |
| 失血 | 1 | 5.26 |
| 振る舞う | 1 | 3.82 |
| 酸化鉄 | 1 | 5.99 |
| 見逃し | 1 | 3.99 |
| 無駄話 | 1 | 4.89 |
| マジウケる | 1 | 6.18 |
| お腹の子 | 1 | 5.06 |
| 準 | 1 | 3.95 |
| 何なり | 1 | 4.71 |
| 競り | 1 | 4.86 |
| 副リーダー | 1 | 5.35 |
| 持ち歩く | 1 | 4.25 |
| 途切れる | 1 | 3.95 |
| 真夏 | 1 | 4.73 |
| 蚊 | 1 | 4.57 |
| 何だって | 1 | 3.60 |
| 泳がせる | 1 | 4.24 |
| 惨劇 | 1 | 4.48 |
| 自尊心 | 1 | 4.48 |
| 耐え難い | 1 | 4.68 |
| 動体視力 | 1 | 4.65 |
| 傍から | 1 | 4.04 |
| 小突く | 1 | 4.26 |
| 即座 | 1 | 5.23 |
| 捌ける | 1 | 4.81 |
| 名折れ | 1 | 4.78 |
| 峰 | 1 | 4.12 |
| 着こなし | 1 | 4.75 |
| 初まり | 1 | 4.73 |
| 仮 | 1 | 3.86 |
| ボケ | 1 | 3.70 |
| せんと | 1 | 4.48 |
| 出頭 | 1 | 4.94 |
| 山肌 | 1 | 4.89 |
| 像 | 1 | 3.61 |
| 焼き | 1 | 3.55 |
| 税込み | 1 | 5.97 |
| 砂金 | 1 | 5.28 |
| 握り拳 | 1 | 4.71 |
| 立ち込める | 1 | 4.35 |
| 生暖かい | 1 | 4.42 |
| 鶏 | 1 | 4.04 |
| 指示を出す | 1 | 3.96 |
| 実を言うと | 1 | 4.70 |
| 言いなり | 1 | 4.72 |
| 三社 | 1 | 4.45 |
| 修める | 1 | 4.38 |
| どうしたものか | 1 | 4.04 |
| 朝晩 | 1 | 5.15 |
| 用具 | 1 | 4.95 |
| ごにょごにょ | 1 | 5.11 |
| パートナー | 1 | 3.97 |
| 一位 | 1 | 4.21 |
| 刈り払い | 1 | 6.75 |
| 解放感 | 1 | 5.03 |
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