Four-Character Idiom · People & Bonds · Kyojuro Rengoku
公明正大
Meaning
To act without hidden motive — letting one's reasoning, position, and judgment be fully visible to others.
私心を挟まず、隠し立てをせずに物事をありのまま正しく伝えること。
The Kyojuro Rengoku moment
On hearing the colour of Tanjiro's nichirin blade — a colour associated with short lifespans — Rengoku names the difficulty out loud rather than softening it.
Why it fits Kyojuro Rengoku
Most adults would have hedged that information for a child. Rengoku gives it straight, in cheerful diction, with the implication that knowing the truth is the foundation of being able to handle it. Kōmei-seidai is the moral name for that habit.
Sources
- デジタル大辞泉 — 公明正大 (dictionary)
- 精選版 日本国語大辞典 — 公明正大 (dictionary)