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 |
|---|---|---|
| マイホーム | 1 | 5.04 |
| 乗り捨てる | 1 | 5.60 |
| よだつ | 1 | 5.30 |
| 面倒くさい | 1 | 3.66 |
| ワーム | 1 | 4.47 |
| と言うことはない | 1 | 4.21 |
| 果敢 | 1 | 4.53 |
| 生計を立てる | 1 | 5.49 |
| 無機物 | 1 | 4.79 |
| オーソドックス | 1 | 4.79 |
| ミミズ腫れ | 1 | 6.07 |
| 群れる | 1 | 4.73 |
| 何れにせよ | 1 | 4.08 |
| 書面 | 1 | 4.49 |
| 寒風 | 1 | 5.17 |
| くみ取る | 1 | 5.36 |
| 役員 | 1 | 4.32 |
| 無様 | 1 | 3.95 |
| 松 | 1 | 4.27 |
| ずば抜ける | 1 | 4.75 |
| 忍び | 1 | 4.36 |
| 雄弁 | 1 | 4.60 |
| がたり | 1 | 5.21 |
| 追い剥ぎ | 1 | 5.31 |
| 晴れ舞台 | 1 | 5.13 |
| 雑草 | 1 | 4.17 |
| 先頭に立つ | 1 | 4.78 |
| 台頭 | 1 | 4.80 |
| 反発 | 1 | 3.90 |
| ウェイター | 1 | 5.02 |
| 厚め | 1 | 4.87 |
| ティアラ | 1 | 3.80 |
| 朝日 | 1 | 4.14 |
| 神経をすり減らす | 1 | 5.71 |
| 門衛 | 1 | 5.01 |
| 頻繁 | 1 | 3.88 |
| 友好的 | 1 | 4.05 |
| いいね | 1 | 3.98 |
| のけ反る | 1 | 4.94 |
| こんなん | 1 | 4.29 |
| 隊を組む | 1 | 6.40 |
| 著しく | 1 | 4.33 |
| クスノキ | 1 | 5.09 |
| どうにかして | 1 | 3.99 |
| 息遣い | 1 | 4.51 |
| 瞬間的 | 1 | 4.27 |
| 老体 | 1 | 4.82 |
| 即時 | 1 | 4.55 |
| 稀薄 | 1 | 6.22 |
| 出ばなをくじく | 1 | 7.29 |
| 吹っ | 1 | 3.29 |
| 一刻 | 1 | 4.39 |
| 垂らす | 1 | 4.28 |
| ぎゅっと | 1 | 3.79 |
| 筋骨隆々 | 1 | 4.45 |
| 主として | 1 | 4.61 |
| 面食らう | 1 | 4.33 |
| 肝 | 1 | 3.97 |
| はてさて | 1 | 4.87 |
| 思い知る | 1 | 4.17 |
| 捨て去る | 1 | 4.66 |
| 同性 | 1 | 4.35 |
| 満場一致 | 1 | 4.84 |
| 明確 | 1 | 3.49 |
| 脳内 | 1 | 3.72 |
| 私兵 | 1 | 4.17 |
| 祝杯 | 1 | 5.04 |
| 乾し物 | 1 | 7.59 |
| しくじる | 1 | 4.59 |
| イントネーション | 1 | 5.14 |
| 成熟 | 1 | 4.70 |
| 少年 | 1 | 2.80 |
| 急ピッチ | 1 | 4.95 |
| イノシシ科 | 1 | 6.35 |
| チョイス | 1 | 4.61 |
| 呼びかけ | 1 | 3.81 |
| 島 | 1 | 3.06 |
| 剥く | 1 | 3.80 |
| ばさり | 1 | 5.04 |
| 死亡 | 1 | 3.75 |
| 桁 | 1 | 4.16 |
| 企み | 1 | 4.33 |
| 遜色 | 1 | 5.09 |
| 持ちこむ | 1 | 4.99 |
| 宝の山 | 1 | 4.98 |
| 取りにくい | 1 | 5.45 |
| はせ参じる | 1 | 5.76 |
| 岩壁 | 1 | 4.36 |
| 全力疾走 | 1 | 4.43 |
| 畳敷きの部屋 | 1 | 6.39 |
| 噂話 | 1 | 4.18 |
| 穿く | 1 | 4.55 |
| 釘 | 1 | 3.92 |
| ツアー | 1 | 4.67 |
| 中腹 | 1 | 4.54 |
| 収集 | 1 | 4.11 |
| 滅茶苦茶 | 1 | 3.68 |
| 念入り | 1 | 4.29 |
| 保冷 | 1 | 4.62 |
| 適さない | 1 | 4.99 |
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