dream chaser; dreamer
Refers to a person who actively pursues their dreams or aspirations, often with a romantic or idealistic nuance.
He has been a dream chaser ever since he was young.
As a dreamer, she moved to Tokyo to become a singer.
Compound of 夢 (yume, 'dream') + 追い (oi, continuative form of 追う 'to chase') + 人 (hito, 'person'), with rendaku voicing of ひと to びと.