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 |
|---|---|---|
| 一見 | 4 | 3.66 |
| 蟹 | 4 | 3.81 |
| 残り物 | 4 | 5.12 |
| 合掌 | 4 | 4.82 |
| 収める | 4 | 3.79 |
| 刈る | 4 | 4.40 |
| 果して | 4 | 4.34 |
| どれ | 4 | 3.75 |
| 染まる | 4 | 3.39 |
| 大家族 | 4 | 5.30 |
| 窮地 | 4 | 4.04 |
| 待ち受ける | 4 | 4.52 |
| 当分の間 | 4 | 5.02 |
| 暮れる | 4 | 4.41 |
| タイヤ | 4 | 4.53 |
| 地盤 | 4 | 4.58 |
| 半 | 4 | 3.51 |
| 一万円 | 4 | 5.19 |
| 誰か | 4 | 2.71 |
| 飛び立つ | 4 | 4.05 |
| チート | 4 | 3.76 |
| 明け | 4 | 3.88 |
| 居城 | 4 | 4.37 |
| 呼び方 | 4 | 4.05 |
| 裏手 | 4 | 4.25 |
| 計算 | 4 | 3.48 |
| 屈強 | 4 | 4.12 |
| その道 | 4 | 4.27 |
| 民家 | 4 | 4.31 |
| かつ | 4 | 3.55 |
| 心得 | 4 | 3.94 |
| 小言 | 4 | 4.42 |
| 耳 | 4 | 2.73 |
| 向けなおす | 4 | 5.55 |
| 斑 | 4 | 4.39 |
| からすると | 4 | 3.77 |
| ギャンブル | 4 | 4.62 |
| 飲み | 4 | 3.48 |
| 奥歯 | 4 | 4.28 |
| 姫君 | 4 | 3.95 |
| 老け | 4 | 4.90 |
| 一級 | 4 | 4.41 |
| 一切 | 4 | 3.13 |
| 預かる | 4 | 3.59 |
| 積み込み | 4 | 4.91 |
| そっと | 4 | 3.14 |
| パソコン | 4 | 4.05 |
| こう見えても | 4 | 4.65 |
| 治療 | 4 | 3.17 |
| 査定 | 4 | 4.57 |
| 茶色 | 4 | 3.87 |
| 寝室 | 4 | 3.73 |
| 貸し | 4 | 3.38 |
| 三階 | 4 | 4.07 |
| 振り分け | 4 | 4.66 |
| おはようございます | 4 | 3.74 |
| お主 | 4 | 3.37 |
| 灰色 | 4 | 3.56 |
| 無茶 | 4 | 3.39 |
| 痛 | 4 | 3.74 |
| 女らしい | 4 | 4.41 |
| 靴 | 4 | 3.57 |
| 監視 | 4 | 3.31 |
| 中隊長 | 4 | 4.30 |
| 大穴 | 4 | 4.16 |
| 滅ぼす | 4 | 3.50 |
| 方角 | 4 | 3.79 |
| 秘密 | 4 | 3.31 |
| 文字どおり | 4 | 5.15 |
| 尾張 | 4 | 4.25 |
| この様 | 4 | 3.25 |
| 覆う | 4 | 3.25 |
| 正午 | 4 | 4.44 |
| 朝ごはん | 4 | 4.48 |
| 足手まとい | 4 | 4.29 |
| 込み上げる | 4 | 4.27 |
| 所で | 4 | 3.30 |
| 刺し | 4 | 3.79 |
| 街中 | 4 | 3.66 |
| 操る | 4 | 3.32 |
| 受験者 | 4 | 4.76 |
| 下し | 4 | 4.24 |
| 姉 | 4 | 2.91 |
| 役に立つ | 4 | 3.45 |
| 道路 | 4 | 4.07 |
| 押し込む | 4 | 3.92 |
| 体高 | 4 | 4.99 |
| ナイス | 4 | 4.22 |
| 向き合う | 4 | 3.73 |
| 合わせ | 4 | 3.63 |
| 性質 | 4 | 3.54 |
| ヒント | 4 | 4.04 |
| 出来事 | 4 | 3.32 |
| どうにか | 4 | 3.21 |
| 誰 | 4 | 2.78 |
| 薙ぎ払う | 4 | 3.97 |
| 知らせ | 4 | 3.68 |
| 海中 | 4 | 4.02 |
| とか何とか | 4 | 4.08 |
| ひと月 | 4 | 4.26 |
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