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 |
|---|---|---|
| 急造 | 1 | 4.85 |
| 寝巻 | 1 | 5.28 |
| 白髪 | 1 | 3.98 |
| 嗜好 | 1 | 4.59 |
| 恐る | 1 | 5.03 |
| 西洋 | 1 | 4.50 |
| 寝具 | 1 | 4.36 |
| どれどれ | 1 | 4.52 |
| 拍子抜け | 1 | 4.22 |
| 三本 | 1 | 4.05 |
| 突きいれる | 1 | 6.55 |
| 染み出し | 1 | 5.31 |
| 駆け付ける | 1 | 4.30 |
| サラリーマン | 1 | 4.56 |
| いい意味で | 1 | 5.00 |
| ってのは | 1 | 3.25 |
| 暇を見て | 1 | 5.47 |
| 討ち果たす | 1 | 4.81 |
| 不才 | 1 | 4.98 |
| スッと | 1 | 4.17 |
| がっかり | 1 | 4.15 |
| 友達付き合い | 1 | 5.65 |
| 荷渡し | 1 | 4.31 |
| 思わしい | 1 | 4.50 |
| 証書 | 1 | 4.75 |
| お祝い | 1 | 3.97 |
| ピンク | 1 | 3.89 |
| 胸のうち | 1 | 5.09 |
| そん | 1 | 4.06 |
| 別宅 | 1 | 4.90 |
| 余力 | 1 | 4.29 |
| マスター | 1 | 3.10 |
| 内臓 | 1 | 3.84 |
| 早足 | 1 | 4.34 |
| 枕 | 1 | 3.99 |
| よれ | 1 | 5.47 |
| 長引かせる | 1 | 5.19 |
| お浸し | 1 | 5.36 |
| 米粒 | 1 | 5.12 |
| 働かせる | 1 | 4.19 |
| 何年ぶりか | 1 | 5.69 |
| 焼酎 | 1 | 4.90 |
| 反動 | 1 | 3.82 |
| あれこれ | 1 | 3.89 |
| 占めた | 1 | 4.47 |
| 右から左へ | 1 | 5.15 |
| 面倒くさい | 1 | 3.66 |
| 復讐心 | 1 | 4.89 |
| あるかないか | 1 | 4.86 |
| ヒビ | 1 | 4.21 |
| 投下 | 1 | 4.29 |
| 公平 | 1 | 4.30 |
| 目いっぱい | 1 | 4.84 |
| 主催 | 1 | 4.18 |
| 雑談 | 1 | 3.82 |
| 根魚 | 1 | 5.16 |
| 股間 | 1 | 4.27 |
| 封筒 | 1 | 4.18 |
| 煮立つ | 1 | 4.99 |
| 年より | 1 | 5.32 |
| 金網 | 1 | 5.09 |
| 紳士的 | 1 | 4.56 |
| 捉える | 1 | 3.34 |
| 跡継ぎ | 1 | 4.24 |
| 託す | 1 | 3.81 |
| 包み | 1 | 3.81 |
| エキサイト | 1 | 5.46 |
| 潜水 | 1 | 4.35 |
| 肯ける | 1 | 5.15 |
| 中学生 | 1 | 4.11 |
| クルマ | 1 | 5.99 |
| 魂胆 | 1 | 4.58 |
| 悦び | 1 | 5.15 |
| 少ししか | 1 | 4.81 |
| 定か | 1 | 4.17 |
| 打ち明ける | 1 | 4.12 |
| 後ろ脚 | 1 | 5.07 |
| 領地 | 1 | 3.13 |
| 熱々 | 1 | 4.61 |
| 求心力 | 1 | 4.97 |
| 掘りだす | 1 | 5.93 |
| 番勝負 | 1 | 6.14 |
| 引っ立てる | 1 | 5.28 |
| 頭が上がらない | 1 | 4.78 |
| 殺風景 | 1 | 4.62 |
| 陣形 | 1 | 3.94 |
| 受信 | 1 | 4.68 |
| 自慢げ | 1 | 4.25 |
| 今どき | 1 | 4.96 |
| 疾走 | 1 | 4.17 |
| 泊り | 1 | 4.79 |
| つかぬ事 | 1 | 5.21 |
| どうやったら | 1 | 4.40 |
| 舞い込む | 1 | 4.60 |
| 人間業 | 1 | 5.33 |
| 脈 | 1 | 4.31 |
| 零 | 1 | 4.17 |
| 利益 | 1 | 3.54 |
| 徒労 | 1 | 4.40 |
| 和紙 | 1 | 5.10 |
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