弟君
Meanings
1
younger brother (polite, archaic)
archaicpolite (teineigo)
Archaic polite term for one's own or someone else's younger brother. The suffix 君 (ぎみ) adds respect. In modern Japanese, 弟 (おとうと) is standard, and 弟さん (おとうとさん) is the common polite form.
In classical literature, scenes where a younger brother serves his elder brother are often depicted.