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 |
|---|---|---|
| 潰す | 5 | 3.09 |
| 感激 | 5 | 4.26 |
| 樽 | 5 | 3.89 |
| 焼く | 5 | 3.28 |
| ほほ | 5 | 4.30 |
| 平気 | 5 | 3.56 |
| 蘭 | 5 | 3.73 |
| 今までどおり | 5 | 5.00 |
| 往く | 5 | 3.36 |
| 誰にも | 5 | 3.40 |
| 明ける | 5 | 4.20 |
| 固める | 5 | 3.80 |
| 所々 | 5 | 4.00 |
| 多すぎる | 5 | 4.09 |
| お互い | 5 | 3.30 |
| 和気あいあい | 5 | 5.06 |
| 長話 | 5 | 4.78 |
| 見下す | 5 | 3.89 |
| やり取り | 5 | 3.21 |
| 完了 | 5 | 3.44 |
| どういう | 5 | 2.81 |
| 当てはまる | 5 | 4.23 |
| 臭い | 5 | 3.42 |
| ローテーション | 5 | 4.73 |
| からこそ | 5 | 3.25 |
| 暑苦しい | 5 | 4.49 |
| 直ぐにでも | 5 | 3.90 |
| そそくさ | 5 | 4.24 |
| 神秘的 | 5 | 4.36 |
| 極限 | 5 | 4.15 |
| でさえ | 5 | 3.45 |
| 脚 | 5 | 3.41 |
| 務める | 5 | 3.82 |
| 誓い | 5 | 3.96 |
| あっさり | 5 | 3.15 |
| 呟く | 5 | 2.77 |
| 言いよう | 5 | 3.98 |
| 藍色 | 5 | 4.36 |
| 叩き込む | 5 | 3.56 |
| 早々 | 5 | 3.54 |
| 手おけ | 5 | 3.35 |
| 釣果 | 5 | 5.16 |
| 客人 | 5 | 3.74 |
| 停める | 5 | 4.18 |
| 怯える | 5 | 3.71 |
| 注文 | 5 | 3.54 |
| いい鴨 | 5 | 3.94 |
| 振る舞い | 5 | 3.85 |
| 親密 | 5 | 4.47 |
| 何より | 5 | 3.02 |
| キープ | 5 | 4.49 |
| 形相 | 5 | 4.03 |
| 予定通り | 5 | 3.81 |
| 大男 | 5 | 3.93 |
| 名乗る | 5 | 3.29 |
| 握手 | 5 | 3.88 |
| 聞ける | 5 | 3.63 |
| ははは | 5 | 3.40 |
| 着る | 5 | 3.35 |
| 定項 | 5 | 3.84 |
| 感心 | 5 | 3.34 |
| 見上げる | 5 | 3.03 |
| 攻勢 | 5 | 3.99 |
| 奇譚 | 5 | 3.49 |
| 政治家 | 5 | 4.19 |
| これなら | 5 | 3.45 |
| 浸かる | 5 | 4.01 |
| どこぞ | 5 | 4.10 |
| 若干 | 5 | 3.24 |
| 日本語 | 5 | 3.90 |
| 若気 | 5 | 4.38 |
| 穏やか | 5 | 3.23 |
| 引っ越し | 5 | 4.29 |
| 刀伊 | 5 | 3.64 |
| 透明 | 5 | 3.71 |
| 唾 | 5 | 3.87 |
| 秤 | 5 | 4.68 |
| くらいなら | 5 | 3.63 |
| 重鎮 | 5 | 4.16 |
| 釣り道具 | 5 | 5.51 |
| 一瞥 | 5 | 3.77 |
| 寛ぐ | 5 | 4.58 |
| エビ | 5 | 4.40 |
| 極めて | 5 | 3.49 |
| 悠長 | 5 | 4.24 |
| 自然薯 | 5 | 5.65 |
| 遅れる | 5 | 3.60 |
| キョトン | 5 | 4.30 |
| 出迎え | 5 | 3.74 |
| 動きだす | 5 | 4.64 |
| なよ | 5 | 3.13 |
| 乃公 | 5 | 3.15 |
| 見やる | 5 | 3.65 |
| 理 | 5 | 3.23 |
| 熟成 | 5 | 4.42 |
| 基本的に | 5 | 3.18 |
| 天幕 | 5 | 3.80 |
| お方 | 5 | 3.78 |
| 歩み | 5 | 3.70 |
| 潰れる | 5 | 4.02 |
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