Ja'iru was nothing more than an unremarkable demon clan baron, but due to a minor accident, he ended up defeating one of the Grand Dukes second only to the Demon King, and found himself taking over that position. This is the story of Ja'iru's first and second years as he aimed to live as peacefully as possible among the demon clan, whose members were mostly muscle-headed. Surrounded by his selfish sister with a brother complex, the most powerful queen, his womanizing best friend, a somewhat perverted Demon King, a strict butler, an expressionless subordinate, and others, Ja'iru's peaceful daily life continued on as always. From the third year onward, I am writing the sequel as "The Peaceful Daily Life of the Demon Clan Grand Duke" → "The Peaceful Daily Life of the Terror Grand Duke."
| Word | Frequency | Difficulty |
|---|---|---|
| 安静 | 3 | 4.48 |
| 好意的 | 3 | 4.09 |
| 張る | 3 | 3.09 |
| 何とも | 3 | 3.28 |
| 叫び声 | 3 | 3.71 |
| 反対意見 | 3 | 4.74 |
| 噂話 | 3 | 4.18 |
| 種 | 3 | 2.95 |
| その頃 | 3 | 3.75 |
| 光栄 | 3 | 3.87 |
| 駆け込む | 3 | 4.16 |
| 将に | 3 | 3.16 |
| ハハハ | 3 | 4.14 |
| 性別 | 3 | 3.80 |
| 真っ青 | 3 | 3.96 |
| 見送り | 3 | 3.75 |
| 暗殺者 | 3 | 3.69 |
| 励む | 3 | 3.90 |
| 痛み | 3 | 3.05 |
| ぼうっと | 3 | 4.41 |
| 画家 | 3 | 4.30 |
| そこら辺 | 3 | 3.84 |
| 大切に | 3 | 3.69 |
| 主な | 3 | 3.97 |
| 万 | 3 | 3.12 |
| 真っ黒 | 3 | 3.92 |
| 滅する | 3 | 4.66 |
| 年下 | 3 | 3.87 |
| 複数 | 3 | 3.29 |
| 関与 | 3 | 4.10 |
| 赤 | 3 | 3.11 |
| お任せ | 3 | 3.86 |
| 最中 | 3 | 3.38 |
| 一家 | 3 | 3.91 |
| お姉 | 3 | 3.30 |
| によると | 3 | 3.63 |
| 個室 | 3 | 4.02 |
| じ | 3 | 3.54 |
| 祝う | 3 | 3.98 |
| 提要 | 3 | 3.97 |
| 一双 | 3 | 3.97 |
| 派 | 3 | 3.22 |
| にかけて | 3 | 3.65 |
| かって | 3 | 3.68 |
| 頓と | 3 | 4.37 |
| 隙 | 3 | 3.12 |
| お願いいたします | 3 | 4.16 |
| 寝台 | 3 | 3.85 |
| 散歩 | 3 | 3.81 |
| 面々 | 3 | 3.25 |
| 家僕 | 3 | 6.21 |
| 三十 | 3 | 3.45 |
| 不在 | 3 | 3.86 |
| 三回 | 3 | 4.07 |
| 遠ざかる | 3 | 3.90 |
| 飲物 | 3 | 5.62 |
| 場面 | 3 | 3.55 |
| 親切 | 3 | 4.00 |
| 摸する | 3 | 3.34 |
| 腑に落ちない | 3 | 4.53 |
| 宿す | 3 | 3.69 |
| 披露 | 3 | 3.81 |
| 左 | 3 | 3.28 |
| 折れる | 3 | 3.58 |
| 重ねる | 3 | 3.62 |
| べらべら | 3 | 4.86 |
| 旅 | 3 | 3.10 |
| 察す | 3 | 3.55 |
| 当日 | 3 | 3.91 |
| 暖か | 3 | 3.55 |
| 異様 | 3 | 3.64 |
| 遠慮なく | 3 | 3.85 |
| お断り | 3 | 3.92 |
| 一端 | 3 | 4.01 |
| 顔つき | 3 | 3.83 |
| まとめ | 3 | 4.00 |
| 近づき | 3 | 3.85 |
| 鮫 | 3 | 4.45 |
| 所詮 | 3 | 3.65 |
| 加える | 3 | 3.36 |
| 汚れる | 3 | 3.88 |
| 飲ます | 3 | 4.45 |
| 落ち着き | 3 | 3.71 |
| 背もたれ | 3 | 4.31 |
| ついて行く | 3 | 3.82 |
| 悲しい | 3 | 3.34 |
| 地図 | 3 | 3.31 |
| 請う | 3 | 4.50 |
| 地面 | 3 | 2.67 |
| 未だに | 3 | 3.45 |
| すんなり | 3 | 4.06 |
| 甘いもの | 3 | 4.26 |
| 隠れる | 3 | 3.64 |
| 事項 | 3 | 4.04 |
| 無関係 | 3 | 3.91 |
| 手を出す | 3 | 3.90 |
| 門前払い | 3 | 4.81 |
| 良い | 3 | 2.17 |
| 足下 | 3 | 3.92 |
| 二部 | 3 | 5.08 |
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