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 |
|---|---|---|
| 切ない | 1 | 4.07 |
| 保管 | 1 | 3.85 |
| 五百万 | 1 | 5.27 |
| 善さ | 1 | 4.59 |
| 傷跡 | 1 | 4.26 |
| ひとっ飛び | 1 | 5.18 |
| 法的 | 1 | 4.75 |
| 言いだす | 1 | 4.48 |
| どうにかして | 1 | 3.99 |
| 枕 | 1 | 3.99 |
| 給え | 1 | 4.07 |
| 晴れて | 1 | 4.13 |
| 駆けあがる | 1 | 5.85 |
| 選ばれし者 | 1 | 5.24 |
| 英雄 | 1 | 3.16 |
| 健康美 | 1 | 6.27 |
| メッキ | 1 | 5.03 |
| 応募 | 1 | 4.57 |
| 立候補 | 1 | 4.46 |
| おまけ | 1 | 3.96 |
| 三昧 | 1 | 4.84 |
| 途切れる | 1 | 3.95 |
| 引き立てる | 1 | 4.95 |
| はいよ | 1 | 4.66 |
| 軒 | 1 | 4.27 |
| 間近 | 1 | 3.76 |
| 一生懸命 | 1 | 3.84 |
| 安らぎ | 1 | 4.50 |
| ごく稀 | 1 | 5.21 |
| 受け取り | 1 | 3.68 |
| 場合によって | 1 | 3.78 |
| 妨害 | 1 | 3.80 |
| 前歯 | 1 | 4.93 |
| 平瓮 | 1 | 5.88 |
| 抜かり | 1 | 4.67 |
| ほな | 1 | 4.66 |
| じゃん | 1 | 3.55 |
| 自宅待機 | 1 | 5.76 |
| 我が物顔 | 1 | 4.78 |
| できる限り | 1 | 4.09 |
| 回転 | 1 | 3.46 |
| お節介 | 1 | 4.46 |
| 連日 | 1 | 4.25 |
| 速やか | 1 | 4.04 |
| 私兵 | 1 | 4.17 |
| 持ち家 | 1 | 5.62 |
| 目標達成 | 1 | 5.35 |
| 水平 | 1 | 4.27 |
| それに加えて | 1 | 4.20 |
| スペシャリスト | 1 | 5.03 |
| 復讐心 | 1 | 4.89 |
| 美少年 | 1 | 4.35 |
| ハイジャンプ | 1 | 5.88 |
| 見覚えがある | 1 | 4.32 |
| 時点 | 1 | 3.13 |
| 射止める | 1 | 4.88 |
| 数量 | 1 | 5.05 |
| 顔から火が出る | 1 | 5.69 |
| 恥知らず | 1 | 4.71 |
| 言葉遣い | 1 | 4.08 |
| おいおい | 1 | 3.46 |
| 店内 | 1 | 3.76 |
| 飲食店 | 1 | 4.47 |
| 味を調える | 1 | 5.80 |
| 清廉 | 1 | 4.66 |
| 破顔 | 1 | 4.45 |
| 一目散 | 1 | 5.95 |
| 無機質 | 1 | 4.31 |
| 来訪 | 1 | 4.06 |
| 鰐 | 1 | 4.09 |
| 再利用可能 | 1 | 5.99 |
| 逆転 | 1 | 4.08 |
| 有耶無耶 | 1 | 4.86 |
| タコ | 1 | 4.20 |
| とどのつまり | 1 | 5.35 |
| 上気 | 1 | 4.50 |
| ふむふむ | 1 | 4.19 |
| 伺い | 1 | 4.41 |
| 節理 | 1 | 6.18 |
| 物事 | 1 | 3.93 |
| 回線 | 1 | 4.68 |
| 食いしばる | 1 | 4.17 |
| ラウンド | 1 | 4.55 |
| 脚色 | 1 | 4.86 |
| 救われる | 1 | 4.40 |
| 狼狽 | 1 | 4.20 |
| 薬味 | 1 | 5.09 |
| 極端 | 1 | 3.84 |
| 同僚 | 1 | 3.84 |
| 居住まい | 1 | 4.66 |
| 歯 | 1 | 3.47 |
| 死地 | 1 | 4.38 |
| 血の滲むよう | 1 | 5.40 |
| 僧寺 | 1 | 3.90 |
| 外部 | 1 | 3.73 |
| 腕組み | 1 | 4.23 |
| 懇願 | 1 | 3.92 |
| 白目 | 1 | 4.26 |
| 帰投 | 1 | 5.21 |
| 戦闘態勢 | 1 | 4.37 |
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