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 |
|---|---|---|
| 禁止 | 1 | 3.64 |
| スッと | 1 | 4.17 |
| 大都会 | 1 | 5.31 |
| 雷光 | 1 | 4.17 |
| 肉料理 | 1 | 4.43 |
| ざわつく | 1 | 4.14 |
| 高ぶり | 1 | 5.23 |
| 日常茶飯事 | 1 | 4.50 |
| 縮み上がる | 1 | 5.31 |
| 翌 | 1 | 4.90 |
| 腹時計 | 1 | 5.67 |
| 荷受 | 1 | 5.65 |
| 位の高い | 1 | 5.21 |
| 重役 | 1 | 4.86 |
| 小突く | 1 | 4.26 |
| 追っ | 1 | 5.13 |
| 不名誉 | 1 | 4.62 |
| お出かけ | 1 | 4.32 |
| 置いて行く | 1 | 4.87 |
| 正気 | 1 | 3.67 |
| とめど無く | 1 | 5.00 |
| 老体 | 1 | 4.82 |
| 緯度 | 1 | 5.11 |
| 声援 | 1 | 4.32 |
| 価格帯 | 1 | 5.73 |
| 色男 | 1 | 4.82 |
| 冷気 | 1 | 4.02 |
| 苦悶 | 1 | 4.16 |
| 大旨 | 1 | 4.65 |
| L | 1 | 4.28 |
| ふっと | 1 | 3.77 |
| 跳ね上がり | 1 | 4.95 |
| タイ | 1 | 4.39 |
| 電力 | 1 | 4.83 |
| けん制 | 1 | 4.92 |
| 文句を言う | 1 | 4.18 |
| 危機的 | 1 | 4.58 |
| 仕度 | 1 | 3.61 |
| 純金 | 1 | 5.22 |
| 日付 | 1 | 4.20 |
| 白髪頭 | 1 | 5.54 |
| 極端 | 1 | 3.84 |
| 坂 | 1 | 3.76 |
| おんぶ | 1 | 4.75 |
| 産物 | 1 | 4.37 |
| 様子をうかがう | 1 | 5.09 |
| 切り殺す | 1 | 5.89 |
| 包みこむ | 1 | 5.50 |
| マスター | 1 | 3.10 |
| 続 | 1 | 4.72 |
| 景気よく | 1 | 5.29 |
| 同性 | 1 | 4.35 |
| 貸してあげる | 1 | 5.19 |
| 家族サービス | 1 | 5.46 |
| 低空飛行 | 1 | 5.05 |
| 読める | 1 | 3.43 |
| 人垣 | 1 | 4.47 |
| 味を調える | 1 | 5.80 |
| 見上げるよう | 1 | 4.86 |
| 竹の皮 | 1 | 6.19 |
| 吐き気 | 1 | 4.23 |
| 巴人 | 1 | 4.40 |
| 私服 | 1 | 4.39 |
| 他愛もない | 1 | 4.68 |
| ばさり | 1 | 5.04 |
| 毀れ | 1 | 4.33 |
| 気が進まない | 1 | 4.84 |
| 跨る | 1 | 4.08 |
| 手当たり次第 | 1 | 4.89 |
| ダイヤモンド | 1 | 4.53 |
| 腹を下す | 1 | 5.78 |
| 閃き | 1 | 4.61 |
| 名づけ | 1 | 4.91 |
| 名折れ | 1 | 4.78 |
| 導き出す | 1 | 4.29 |
| 身長 | 1 | 3.45 |
| 有言実行 | 1 | 5.12 |
| 舌打ち | 1 | 3.62 |
| 網羅 | 1 | 4.75 |
| にじみ出す | 1 | 6.05 |
| なんて目じゃない | 1 | 5.39 |
| 目盛 | 1 | 5.92 |
| 今更ながら | 1 | 4.17 |
| ヘタクソ | 1 | 5.46 |
| 考えつく | 1 | 4.55 |
| 興じる | 1 | 4.31 |
| 稀代 | 1 | 4.73 |
| 濡れる | 1 | 3.84 |
| 自重 | 1 | 3.97 |
| 激烈 | 1 | 4.96 |
| 行けない | 1 | 4.06 |
| 針のムシロ | 1 | 6.36 |
| 幼馴染 | 1 | 3.65 |
| 何れにしても | 1 | 4.36 |
| 気にいる | 1 | 4.74 |
| 相撲 | 1 | 4.68 |
| 愛 | 1 | 3.07 |
| 踏ん張る | 1 | 4.28 |
| 次元 | 1 | 3.72 |
| イントネーション | 1 | 5.14 |
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