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 |
|---|---|---|
| 片 | 4 | 3.98 |
| ずい | 4 | 4.62 |
| 研修生 | 4 | 5.49 |
| 薙ぎ払う | 4 | 3.97 |
| 参った | 4 | 4.01 |
| 最後尾 | 4 | 4.20 |
| 贈る | 4 | 3.63 |
| 骨 | 4 | 3.21 |
| せっせと | 4 | 4.37 |
| 看板 | 4 | 3.87 |
| 取得 | 4 | 3.58 |
| 凶報 | 4 | 5.19 |
| 打ち | 4 | 3.63 |
| 十倍 | 4 | 4.40 |
| 眠れる | 4 | 3.78 |
| 隆起 | 4 | 4.40 |
| 当然のこと | 4 | 3.82 |
| 田畑 | 4 | 4.63 |
| ポカン | 4 | 4.28 |
| その道 | 4 | 4.27 |
| 和風 | 4 | 4.52 |
| 財宝 | 4 | 4.20 |
| 斑 | 4 | 4.39 |
| 埋蔵金 | 4 | 5.71 |
| 四百 | 4 | 4.36 |
| 灰色 | 4 | 3.56 |
| 失礼 | 4 | 3.13 |
| けれど | 4 | 2.43 |
| 山道 | 4 | 4.20 |
| フラグ | 4 | 3.87 |
| どちら | 4 | 3.37 |
| 刀身 | 4 | 3.73 |
| 孕む | 4 | 4.21 |
| 他国 | 4 | 3.41 |
| 反転 | 4 | 3.97 |
| ですら | 4 | 3.29 |
| 悪さ | 4 | 3.79 |
| 運よく | 4 | 4.57 |
| 何千 | 4 | 4.29 |
| 戦果 | 4 | 3.96 |
| 差し置く | 4 | 4.50 |
| 決まり | 4 | 3.89 |
| 計算 | 4 | 3.48 |
| 海辺 | 4 | 4.68 |
| 職業 | 4 | 3.37 |
| 座布団 | 4 | 4.68 |
| 正午 | 4 | 4.44 |
| 照れ | 4 | 3.61 |
| 施工 | 4 | 5.21 |
| 瞬時 | 4 | 3.67 |
| いい事 | 4 | 3.82 |
| トーン | 4 | 4.39 |
| 会社 | 4 | 3.72 |
| 掛け声 | 4 | 4.15 |
| ケガをした | 4 | 5.60 |
| 招き | 4 | 4.09 |
| 乗り物 | 4 | 4.23 |
| 結果的に | 4 | 3.83 |
| 占める | 4 | 3.97 |
| ホール | 4 | 3.84 |
| ハプニング | 4 | 4.88 |
| 適当 | 4 | 3.17 |
| 維持費 | 4 | 4.79 |
| 香辛料 | 4 | 4.12 |
| 人生経験 | 4 | 4.89 |
| 異能 | 4 | 3.99 |
| ヤバい | 4 | 3.88 |
| 半 | 4 | 3.51 |
| 行き倒れ | 4 | 4.94 |
| 赤面 | 4 | 4.32 |
| 火燵 | 4 | 4.74 |
| 本来なら | 4 | 3.43 |
| 押し込む | 4 | 3.92 |
| 宣言 | 4 | 3.25 |
| 頷き | 4 | 3.24 |
| そっと | 4 | 3.14 |
| 帰宅 | 4 | 3.93 |
| 系 | 4 | 2.92 |
| からすると | 4 | 3.77 |
| 男たち | 4 | 3.49 |
| 偉い | 4 | 3.69 |
| 構図 | 4 | 4.32 |
| 一度に | 4 | 3.99 |
| 担ぐ | 4 | 4.10 |
| 隊列 | 4 | 4.05 |
| 領域 | 4 | 3.48 |
| 華やか | 4 | 4.02 |
| 貸し | 4 | 3.38 |
| かっ | 4 | 3.46 |
| 通用 | 4 | 3.67 |
| どんどん | 4 | 3.33 |
| 救い | 4 | 3.62 |
| 可愛らしい | 4 | 3.32 |
| 願望 | 4 | 4.14 |
| 免状 | 4 | 5.18 |
| 色んな | 4 | 3.36 |
| 四角い | 4 | 4.25 |
| 冷やす | 4 | 4.17 |
| 思うように | 4 | 4.09 |
| 様々 | 4 | 3.02 |
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