expression, godan verb (-tsu)
establish oneself in life; achieve success; reach a high position
Refers to making one's mark in society, often through career or public achievement. Slightly formal and literary.
彼は若くして世に立ち、有名な作家になった。
He established himself in life at a young age and became a famous writer.
expression, godan verb (-tsu)
begin adult life; step out into the world
Focuses on the start of one's independent adult life, such as after graduation or entering the workforce.
大学を卒業して、いよいよ世に立つ時が来た。
After graduating from university, the time has finally come to step out into the world.