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 |
|---|---|---|
| リード | 1 | 3.85 |
| 空気が読めない | 1 | 5.21 |
| フル回転 | 1 | 4.92 |
| 雲泥の差 | 1 | 4.71 |
| 客間 | 1 | 4.30 |
| 単独行動 | 1 | 4.59 |
| おーい | 1 | 4.00 |
| うんざり | 1 | 4.02 |
| 滅入る | 1 | 4.89 |
| お見せする | 1 | 5.37 |
| 死角 | 1 | 4.04 |
| 最適 | 1 | 3.96 |
| 三原色 | 1 | 6.25 |
| 見逃し | 1 | 3.99 |
| 調味料 | 1 | 4.00 |
| 中心地 | 1 | 4.62 |
| ツンと | 1 | 4.72 |
| 小さ目 | 1 | 5.61 |
| 真夏 | 1 | 4.73 |
| 喋る | 1 | 3.37 |
| 狭 | 1 | 4.56 |
| 報われる | 1 | 4.83 |
| 羽子 | 1 | 3.71 |
| 赤子の手をひねる | 1 | 5.62 |
| 険しい顔つき | 1 | 5.46 |
| 棒 | 1 | 3.51 |
| 終息 | 1 | 4.77 |
| 揉む | 1 | 3.94 |
| 投げやり | 1 | 4.46 |
| ジジイ | 1 | 4.14 |
| 申し | 1 | 4.18 |
| 乗り越える | 1 | 3.64 |
| 順当 | 1 | 4.53 |
| 瞑想 | 1 | 4.31 |
| 自在に | 1 | 4.14 |
| 佃 | 1 | 3.25 |
| 心のよりどころ | 1 | 6.03 |
| 誉れ高い | 1 | 5.40 |
| 行方不明 | 1 | 3.96 |
| 食い下がる | 1 | 4.39 |
| お付き合い | 1 | 4.09 |
| 焼 | 1 | 4.88 |
| きゃっきゃ | 1 | 5.29 |
| 外敵 | 1 | 4.41 |
| 心ここにあらず | 1 | 5.09 |
| 建 | 1 | 4.09 |
| 掻い出す | 1 | 6.89 |
| 頼もしい | 1 | 3.76 |
| うつむき加減 | 1 | 5.40 |
| 凍り | 1 | 4.94 |
| 一戸建て | 1 | 5.49 |
| 桶 | 1 | 4.08 |
| 篤と | 1 | 4.82 |
| 奪い去る | 1 | 5.35 |
| 不才 | 1 | 4.98 |
| 契機 | 1 | 4.83 |
| 手を煩わせる | 1 | 4.96 |
| 初桜 | 1 | 7.59 |
| オフレコ | 1 | 5.78 |
| 風邪ひく | 1 | 5.54 |
| 取り止め | 1 | 5.17 |
| 良薬 | 1 | 5.76 |
| 開いた口がふさがらない | 1 | 5.79 |
| 保冷 | 1 | 4.62 |
| エントロピー | 1 | 5.69 |
| 飾り立てる | 1 | 4.86 |
| 何かにつけて | 1 | 4.99 |
| 山ほど | 1 | 4.16 |
| ううん | 1 | 3.63 |
| 桁 | 1 | 4.16 |
| よしよし | 1 | 4.11 |
| 器 | 1 | 3.42 |
| 推進 | 1 | 4.32 |
| いいご身分 | 1 | 5.58 |
| ウネウネ | 1 | 5.20 |
| 寝そべる | 1 | 4.31 |
| 潔い | 1 | 4.37 |
| ってのは | 1 | 3.25 |
| 水分 | 1 | 4.04 |
| へ理屈 | 1 | 6.28 |
| 腐れ縁 | 1 | 4.90 |
| 話術 | 1 | 4.61 |
| トランク | 1 | 4.84 |
| 給料 | 1 | 4.05 |
| 虚しく | 1 | 4.33 |
| 化する | 1 | 3.89 |
| 気前 | 1 | 5.39 |
| 言いくるめる | 1 | 4.75 |
| ひょろり | 1 | 6.21 |
| 難色 | 1 | 4.61 |
| 大人気 | 1 | 4.38 |
| さすれば | 1 | 4.67 |
| 免 | 1 | 4.71 |
| 戦時 | 1 | 4.52 |
| 極み | 1 | 4.29 |
| 人心地 | 1 | 4.99 |
| たぐり寄せる | 1 | 5.81 |
| 老体 | 1 | 4.82 |
| 応急策 | 1 | 7.42 |
| 急ピッチ | 1 | 4.95 |
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