N2 — outside your level filter
write + now that
kaku ijou wa
now that; given that — a fact already true commits the speaker to what follows
自分でやると言った以上は、最後までやり抜くよ。
jibun de yaru to itta ijou wa, saigo made yarinuku yo.
Now that I've said I'll do it myself, I'm seeing it through to the end. casual
この仕事を引き受けた以上は、責任を持って進めます。
kono shigoto o hikiuketa ijou wa, sekinin o motte susumemasu.
Now that I've taken on this job, I'll see it through responsibly. neutral