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 |
|---|---|---|
| 助っ人 | 2 | 4.35 |
| 裸体 | 2 | 4.76 |
| 飛躍的 | 2 | 4.53 |
| 切り裂く | 2 | 3.43 |
| 飴玉 | 2 | 4.78 |
| 簡潔 | 2 | 4.11 |
| ボロい | 2 | 4.85 |
| 大概 | 2 | 3.98 |
| いい気 | 2 | 4.72 |
| 今しかない | 2 | 4.87 |
| 出禁 | 2 | 3.89 |
| 冷ます | 2 | 4.48 |
| 勝 | 2 | 4.17 |
| 掘り下げる | 2 | 4.82 |
| 見回り | 2 | 4.15 |
| 力む | 2 | 4.60 |
| 長期戦 | 2 | 4.50 |
| すげー | 2 | 4.21 |
| 真っ直ぐ | 2 | 3.17 |
| 健康的 | 2 | 4.47 |
| そうかもしれない | 2 | 4.19 |
| ご一緒 | 2 | 4.17 |
| 発展 | 2 | 3.51 |
| 員 | 2 | 3.73 |
| 任務 | 2 | 3.38 |
| 隔絶 | 2 | 4.40 |
| 涎 | 2 | 4.08 |
| 一幕 | 2 | 4.48 |
| 正規兵 | 2 | 4.88 |
| 胴 | 2 | 4.04 |
| 長男 | 2 | 3.91 |
| 開放 | 2 | 3.85 |
| 突き出た | 2 | 4.76 |
| 比べ | 2 | 3.80 |
| 道順 | 2 | 4.92 |
| 呼称 | 2 | 4.25 |
| ずぶの素人 | 2 | 5.81 |
| 執拗 | 2 | 4.31 |
| 時の流れ | 2 | 4.75 |
| スレ | 2 | 4.11 |
| 空しく | 2 | 4.54 |
| 現象 | 2 | 3.59 |
| 猟 | 2 | 4.44 |
| 発生 | 2 | 3.13 |
| 取り外す | 2 | 4.84 |
| 観戦 | 2 | 3.99 |
| アグレッシブ | 2 | 5.14 |
| 寄与 | 2 | 4.71 |
| 瓦礫 | 2 | 3.84 |
| 駆ける | 2 | 3.80 |
| トラウマ | 2 | 3.95 |
| 上着 | 2 | 3.94 |
| 噴出 | 2 | 4.14 |
| 鉈 | 2 | 4.13 |
| 皆目 | 2 | 4.71 |
| 口惜しい | 2 | 4.55 |
| 些々 | 2 | 4.48 |
| 軍事機密 | 2 | 5.28 |
| 呼吸 | 2 | 3.43 |
| 地塊 | 2 | 5.39 |
| ツナギ | 2 | 5.24 |
| 本能的 | 2 | 4.09 |
| 押しつけ | 2 | 4.20 |
| ハト | 2 | 4.86 |
| 剣筋 | 2 | 4.67 |
| 一人当たり | 2 | 5.09 |
| 精神衛生 | 2 | 4.85 |
| 何の変哲もない | 2 | 4.53 |
| おお | 2 | 2.89 |
| 噴火 | 2 | 4.58 |
| 喝さい | 2 | 6.48 |
| 夜空 | 2 | 3.94 |
| 届け | 2 | 3.66 |
| 得意分野 | 2 | 4.55 |
| 立て直す | 2 | 4.11 |
| 争覇 | 2 | 3.62 |
| 二人部屋 | 2 | 5.06 |
| 心配無用 | 2 | 5.01 |
| 考え出す | 2 | 4.70 |
| 肌寒い | 2 | 4.57 |
| 酷使 | 2 | 4.42 |
| 俺様 | 2 | 3.78 |
| 十中八九 | 2 | 4.38 |
| 予定者 | 2 | 5.40 |
| 物にする | 2 | 4.50 |
| 属する | 2 | 4.06 |
| 引き継ぐ | 2 | 3.93 |
| 五体満足 | 2 | 4.71 |
| 上体 | 2 | 4.23 |
| 結い上げる | 2 | 4.69 |
| 委ねる | 2 | 4.14 |
| 軍隊 | 2 | 3.83 |
| 黄色 | 2 | 3.89 |
| 小倅 | 2 | 5.50 |
| ませんか | 2 | 3.97 |
| 奇麗 | 2 | 3.70 |
| 采配 | 2 | 4.47 |
| 諸氏 | 2 | 4.84 |
| 物になる | 2 | 4.03 |
| 学者 | 2 | 4.07 |
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