厳げん君くん

noun

your father (honorific)

A very formal, literary honorific term for addressing or referring to someone's father. Extremely rare in modern spoken Japanese; more common in classical or highly formal written contexts.

• お手て紙がみで「厳げん君くんによろしく」と書かかれていました。

  In the letter, it was written, 'Please give my regards to your father.'