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 |
|---|---|---|
| 一棟 | 1 | 5.48 |
| 衣服 | 1 | 3.77 |
| 人払い | 1 | 4.49 |
| 入れ替える | 1 | 4.40 |
| 直轄地 | 1 | 4.77 |
| 供する | 1 | 5.16 |
| 自堕落 | 1 | 5.09 |
| 構える | 1 | 3.27 |
| 飾り棚 | 1 | 5.71 |
| 引きつる | 1 | 4.67 |
| 成人女性 | 1 | 5.23 |
| 短縮 | 1 | 4.07 |
| 産まれる | 1 | 3.89 |
| 匂わせる | 1 | 4.62 |
| 消し去る | 1 | 4.56 |
| ってか | 1 | 3.72 |
| 安穏 | 1 | 4.89 |
| 忘れもの | 1 | 5.83 |
| 割合 | 1 | 4.06 |
| 蜘蛛の糸 | 1 | 4.66 |
| 日課 | 1 | 4.28 |
| 何やら | 1 | 3.19 |
| 在位 | 1 | 5.19 |
| 玉の輿 | 1 | 5.05 |
| 飛びかかる | 1 | 3.97 |
| しっかり者 | 1 | 4.90 |
| 食器 | 1 | 3.99 |
| 諍い | 1 | 4.35 |
| 脚力 | 1 | 4.45 |
| なあに | 1 | 4.40 |
| グッドタイミング | 1 | 5.96 |
| だろうに | 1 | 4.05 |
| 牢屋 | 1 | 4.05 |
| 迷路 | 1 | 4.23 |
| 水面 | 1 | 3.79 |
| 女優 | 1 | 4.55 |
| エスコート | 1 | 4.08 |
| 間断 | 1 | 5.60 |
| 知ったこっちゃない | 1 | 5.26 |
| お淑やか | 1 | 4.70 |
| 道理で | 1 | 4.11 |
| ○○ | 1 | 4.25 |
| 限定 | 1 | 3.71 |
| 成分 | 1 | 4.06 |
| お金 | 1 | 3.09 |
| まする | 1 | 4.68 |
| 長話 | 1 | 4.78 |
| 破棄 | 1 | 3.70 |
| 外そう | 1 | 4.72 |
| ギュッと | 1 | 4.25 |
| ネーミング | 1 | 4.54 |
| いつの間にやら | 1 | 4.56 |
| 絵画 | 1 | 3.96 |
| 幸いにも | 1 | 4.21 |
| 俺様 | 1 | 3.78 |
| 不埒 | 1 | 4.62 |
| ぐるぐる | 1 | 4.01 |
| 例によって | 1 | 4.48 |
| 周辺 | 1 | 3.21 |
| としたって | 1 | 5.08 |
| 一兵卒 | 1 | 5.00 |
| のんびり | 1 | 3.46 |
| 何気に | 1 | 4.22 |
| いい加減にする | 1 | 5.86 |
| 心を読む | 1 | 5.03 |
| 次代 | 1 | 4.13 |
| 化 | 1 | 2.96 |
| 同室 | 1 | 4.55 |
| 挙って | 1 | 4.42 |
| 苦虫を噛みつぶしたよう | 1 | 5.87 |
| 捜査 | 1 | 4.14 |
| 計る | 1 | 4.20 |
| 細工 | 1 | 3.94 |
| 貢ぎ物 | 1 | 5.44 |
| お前等 | 1 | 4.17 |
| 持ち帰る | 1 | 3.86 |
| 消失 | 1 | 3.86 |
| それ故に | 1 | 3.87 |
| 魔獣 | 1 | 2.97 |
| 隔てる | 1 | 4.48 |
| 決定づける | 1 | 5.03 |
| 見渡す限り | 1 | 4.48 |
| もう無理 | 1 | 4.51 |
| 一層目 | 1 | 5.56 |
| 剝がす | 1 | 4.92 |
| 奪還 | 1 | 3.97 |
| 方円 | 1 | 5.91 |
| キロ | 1 | 3.30 |
| 細々 | 1 | 4.60 |
| 顔を上げる | 1 | 3.78 |
| ダンディ | 1 | 4.95 |
| 客観的 | 1 | 4.18 |
| 芯が強い | 1 | 5.93 |
| 改修 | 1 | 4.53 |
| 籠絡 | 1 | 4.84 |
| 鼻水 | 1 | 4.42 |
| 日頃 | 1 | 4.08 |
| 手のひら | 1 | 3.67 |
| 想う | 1 | 3.60 |
| 地響き | 1 | 4.27 |
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