Perfect Woman (2000)

Jinno Sakurako (Matsushima Nanako) grew up in a very poor family and is thus determined to marry a rich man so that she will never have to go through poverty ever again, and is named the "gokon queen" in her quest to find her man. Nakahara Osuke (Tsutsumi Shinichi) is a brilliant academic (Fields prize winner - Nobel Prize equivalent in Mathematics) who gave up his studies to take over his deceased father's fish-shop. They meet through a doctor's "gokon" (group date) and she falls in love with him under the mistaken assumption that he is a very rich man