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 |
|---|---|---|
| 気功 | 1 | 4.52 |
| しっぺ返し | 1 | 5.12 |
| 目に見えて | 1 | 3.86 |
| ニッパー | 1 | 6.45 |
| 難しさ | 1 | 4.76 |
| 信条 | 1 | 4.65 |
| 私か | 1 | 4.81 |
| 色男 | 1 | 4.82 |
| 甲斐がある | 1 | 4.63 |
| 道程 | 1 | 4.61 |
| 寝巻 | 1 | 5.28 |
| 立て替え | 1 | 5.31 |
| それに加えて | 1 | 4.20 |
| 一言に尽きる | 1 | 4.82 |
| 雑念 | 1 | 4.86 |
| 落胆 | 1 | 4.10 |
| 落石 | 1 | 5.04 |
| 輸送 | 1 | 3.85 |
| 懐中電灯 | 1 | 4.78 |
| 空き部屋 | 1 | 4.81 |
| 辛味 | 1 | 5.03 |
| 掛かりきり | 1 | 5.02 |
| うなぎ登り | 1 | 5.50 |
| 未熟 | 1 | 3.88 |
| モテない | 1 | 4.80 |
| 牽引 | 1 | 4.78 |
| 群生 | 1 | 4.87 |
| 曇る | 1 | 4.17 |
| 駆け引き | 1 | 4.29 |
| 個人プレー | 1 | 6.36 |
| チリ | 1 | 4.82 |
| 気合が入る | 1 | 5.47 |
| 取りにくい | 1 | 5.45 |
| 同調 | 1 | 3.95 |
| 寝かせる | 1 | 3.99 |
| 見てくれ | 1 | 4.01 |
| 肉料理 | 1 | 4.43 |
| 帰投 | 1 | 5.21 |
| 乱す | 1 | 3.87 |
| ビックリするほど | 1 | 5.67 |
| 山菜採り | 1 | 5.71 |
| 惨状 | 1 | 4.12 |
| 三枚 | 1 | 4.26 |
| 清々 | 1 | 5.20 |
| 厳密 | 1 | 4.29 |
| 固唾をのむ | 1 | 6.45 |
| 暇を見て | 1 | 5.47 |
| 優る | 1 | 4.14 |
| 時代背景 | 1 | 5.71 |
| 目論見 | 1 | 4.21 |
| 失策 | 1 | 4.79 |
| 漆塗り | 1 | 5.54 |
| 物理 | 1 | 3.28 |
| ロス | 1 | 4.01 |
| って言うか | 1 | 3.52 |
| 篭絡 | 1 | 5.03 |
| 修学旅行 | 1 | 4.46 |
| 吠える | 1 | 3.84 |
| 梁 | 1 | 3.95 |
| 行き場 | 1 | 4.50 |
| 矢がら | 1 | 5.73 |
| 篤と | 1 | 4.82 |
| 人気がある | 1 | 4.50 |
| 係わる | 1 | 4.48 |
| うめー | 1 | 5.22 |
| それじゃあ | 1 | 3.25 |
| 完ぺき | 1 | 5.56 |
| 言いくるめる | 1 | 4.75 |
| 法的 | 1 | 4.75 |
| 遭う | 1 | 3.72 |
| ヌメヌメ | 1 | 5.64 |
| 基準 | 1 | 3.71 |
| 注意深く | 1 | 4.37 |
| 円柱状 | 1 | 5.29 |
| 買いこむ | 1 | 5.65 |
| 必至 | 1 | 4.38 |
| 乳 | 1 | 3.24 |
| 緊急 | 1 | 3.80 |
| 何かにつけて | 1 | 4.99 |
| 文句を言う | 1 | 4.18 |
| 足る | 1 | 3.81 |
| 灯 | 1 | 3.92 |
| 脳出血 | 1 | 6.36 |
| メキメキ | 1 | 4.93 |
| 開いた口がふさがらない | 1 | 5.79 |
| 妊娠 | 1 | 4.06 |
| 非現実的 | 1 | 4.77 |
| わざとらしい | 1 | 4.00 |
| 知らしめる | 1 | 4.52 |
| 書籍化 | 1 | 4.50 |
| 酒屋 | 1 | 4.96 |
| 握らせる | 1 | 5.06 |
| 急 | 1 | 3.79 |
| 蛇 | 1 | 3.25 |
| ママ | 1 | 3.75 |
| 駆けあがる | 1 | 5.85 |
| 尻尾 | 1 | 3.15 |
| 風上 | 1 | 4.96 |
| ダルマ | 1 | 4.88 |
| お待たせしました | 1 | 3.96 |
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