1. 君子 の 剣 (Kunshi no Ken) - This is the most direct translation and uses the kanji for "gentleman" (君子) and "sword" (剣). This emphasizes the traditional concept of a gentleman's sword.
2. 君子 の けん (Kunshi no ken) - This is the same as the previous option, but uses the hiragana for "sword" (けん). This emphasizes the pronunciation and may be more common in informal settings.
3. 賢士 の 剣 (Kenshi no Ken) - This uses the kanji for "wise person" (賢士) instead of "gentleman". It is a less common translation and may not be as widely understood.
4. 君子の剣 (Kunshi no Ken) - This uses the kanji for "gentleman" (君子) and "sword" (剣) combined into a single word. This is more concise and may be used in titles or formal situations.
5. 君子の剣道 (Kunshi no Kendō) - This adds "Kendō" (swordsmanship) to the end, creating a complete phrase. This emphasizes the martial arts aspect of the term.
Ultimately, the best way to write "Kunshi no Ken" in Japanese depends on the context and what you want to convey.