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 |
|---|---|---|
| 敢えて | 4 | 3.31 |
| 立派 | 4 | 3.24 |
| 預かる | 4 | 3.59 |
| 大家族 | 4 | 5.30 |
| 十倍 | 4 | 4.40 |
| 男たち | 4 | 3.49 |
| その先 | 4 | 3.57 |
| 役回り | 4 | 4.71 |
| 仰ぐ | 4 | 3.63 |
| 本能 | 4 | 3.70 |
| 入隊 | 4 | 4.40 |
| 未開 | 4 | 4.61 |
| 観察 | 4 | 3.29 |
| すか | 4 | 3.90 |
| シンプル | 4 | 3.78 |
| 側から | 4 | 3.82 |
| 恐れ | 4 | 3.43 |
| 塩焼き | 4 | 4.80 |
| 縫う | 4 | 3.95 |
| 動き出す | 4 | 3.46 |
| 決着 | 4 | 3.69 |
| 露 | 4 | 3.76 |
| 着ける | 4 | 3.43 |
| 険しい顔 | 4 | 4.48 |
| 積み込み | 4 | 4.91 |
| かつ | 4 | 3.55 |
| 五分 | 4 | 3.87 |
| 一見 | 4 | 3.66 |
| 留守 | 4 | 4.09 |
| 大した | 4 | 3.24 |
| 伴う | 4 | 3.51 |
| 空腹 | 4 | 4.02 |
| 癒す | 4 | 3.84 |
| 赤子 | 4 | 3.98 |
| 出会う | 4 | 3.16 |
| 無さそう | 4 | 3.37 |
| 剣 | 4 | 2.24 |
| 学ぶ | 4 | 3.35 |
| 使命 | 4 | 3.96 |
| バラ | 4 | 3.96 |
| ギャンブル | 4 | 4.62 |
| いい人 | 4 | 4.21 |
| 夫人 | 4 | 3.53 |
| 知らせ | 4 | 3.68 |
| 抱きしめる | 4 | 3.35 |
| そうする | 4 | 3.75 |
| 何という | 4 | 3.57 |
| 銃 | 4 | 3.38 |
| 指 | 4 | 2.96 |
| 至って | 4 | 3.57 |
| 主たる | 4 | 4.67 |
| 保有 | 4 | 3.92 |
| 時半 | 4 | 4.42 |
| 両側 | 4 | 4.35 |
| 細心 | 4 | 4.45 |
| 凌ぐ | 4 | 4.07 |
| 濡れ | 4 | 3.98 |
| 我ら | 4 | 3.27 |
| 射殺す | 4 | 5.17 |
| 埋蔵金 | 4 | 5.71 |
| 便利 | 4 | 3.35 |
| 一万円 | 4 | 5.19 |
| 察するに | 4 | 4.10 |
| こう見えても | 4 | 4.65 |
| 海辺 | 4 | 4.68 |
| 披露 | 4 | 3.81 |
| 話し込む | 4 | 4.37 |
| 咀嚼 | 4 | 4.15 |
| ウキウキ | 4 | 4.66 |
| 面白い | 4 | 2.98 |
| 資質 | 4 | 4.04 |
| 親 | 4 | 3.18 |
| 水面 | 4 | 3.79 |
| バリケード | 4 | 4.52 |
| 一変 | 4 | 4.08 |
| おはようございます | 4 | 3.74 |
| 切り落とし | 4 | 4.51 |
| 羽蟻 | 4 | 3.83 |
| 元凶 | 4 | 4.01 |
| 参った | 4 | 4.01 |
| 一路 | 4 | 4.72 |
| 深夜 | 4 | 3.90 |
| 構図 | 4 | 4.32 |
| 受験者 | 4 | 4.76 |
| この様 | 4 | 3.25 |
| 当分の間 | 4 | 5.02 |
| 快諾 | 4 | 4.54 |
| 血流 | 4 | 4.98 |
| そり | 4 | 4.50 |
| 言い放つ | 4 | 3.62 |
| 救い | 4 | 3.62 |
| 華やか | 4 | 4.02 |
| ついでに | 4 | 3.19 |
| 駈け | 4 | 4.90 |
| 指揮を執る | 4 | 4.66 |
| 誰 | 4 | 2.78 |
| ぐらい | 4 | 2.70 |
| 分断 | 4 | 4.10 |
| 伯父さん | 4 | 3.54 |
| 合わせ | 4 | 3.63 |
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