僕はイチで通ってるんだ。

I; me; you; manservant

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

one; best; first; foremost; beginning; start; bottom string (on a shamisen, etc.)

indicates location of action; at; in; indicates time of action; indicates means of action; cause of effect; by; and then; so; indicates continuing action; indicates certainty, emphasis, etc.

to go to and from (a place); to go back and forth between; to run between (e.g. bus, train, etc.); to ply between; to go to (school, work, etc.); to attend; to commute; to frequent; to circulate (e.g. blood, electricity); to be communicated (e.g. thought); to resemble

yes; yeah; uh huh; negative verb ending used in informal speech (abbr. of negative verb ending "nu"); abbr. of particle "no"; abbr. of particle "ni" (used especially when it precedes the verb "naru")

be; is; indicates past or completed action; indicates light imperative