me, I (male), servant, manservant
僕 centers on a male self-reference that carries a sense of humility or service: a man referring to himself modestly, or a male servant. The 'I (male)' and 'manservant' meanings both stem from this idea of a humble male role.
僕 combines 亻 (person) with 菐, which likely contributes the sound and may relate to a servant or attendant. The exact historical development of 菐 is uncertain.
A person 亻 carrying a heavy load on the right 菐, like a servant bearing burdens. This humble figure represents the male 'I' used by a manservant.
For ボク, imagine a humble servant bowing low and saying 'boku' as he introduces himself. The sound 'boku' directly matches the reading ボク.
I; me
we; us
we
manservant
public servant
manservant; male attendant; valet
servant; manservant; menial
I; me
I; me
my home
at my place
fellow servant
woman who uses the usually male personal pronoun "boku" to refer to herself
male and female servants
my personal (e.g. opinion)
manservant; footman
working student
houseboy; manservant
faithful servant
student studying and working at the school