桧山: a male given name

飛躍: leaping / 秘薬: secret medicine

飛躍: to make a leap forward

被告: defendant, the accused

木皮: tree bark / 黙秘: remaining silent

黙秘: remain silent

秘伝: confidential, secret tradition

飛竜: a wyvern / 飛龍: a "flying dragon" (shogi piece)

篳篥: a cylindrical double reed wind instrument used in the gagaku music of Japan

百日の説法屁一つ: “a hundred days of sermonizing, one fart” → a metaphor for how extreme effort something that one has put great effort into can come to nothing after even a slight mistake, much as a hundred days of serious spiritual study can be lost to the winds