小生 (しょうせい) Japanese meaning | KotomoraMeanings
1
pronoun
I; me; my humble self
humble (kenjougo)male term, language, or name
Humble first-person pronoun used mainly by men in formal letters. Conveys modesty and respect toward the recipient.
小生の不徳の致すところでございます。
It is due to my own lack of virtue.