Yoon was just getting started, however, and in June and July she started playing better and better. She made multiple top fives and grabbed a win in July. She still hadn't caught Lee, but they were now 1-2. But shortly after that, Yoon got embroiled in a cheating scandal and was kicked off the tour. Lee went on to cruise to an easy win in the Rookie race, becoming the first rookie to ever break 3000 points in the standings.

Yewon notched a bunch more top threes, and had another good chance to win at the Pak Se Ri Invitational, only to again lose by a single shot, this time to Su Ji Kim. Kim did the same thing to her the following week at the Hana Financial Championship. Yewon never was able to get a win in 2022, but she nonetheless had a spectaculr debut year. She collected three seconds, three thirds, a fourth and four fifths, and a total of 13 top tens. She earned nearly 850 million won, the most money ever earned on tour by a player without a win. She won the Rookie of the Year, finished third on the money list and fourth in the Player of the Year race. She ended the year in the top 50 in the world rankings.

Yewon had a phenomenal second year on tour, one of the best in history. If she was worried about how long it would take her to get her first win, she settled that immediately: she won the Lotte Rent-a-Car Open, the first event played in Korea in the 2023 season, with a three-shot margin. She continued to play well throughout the year, grabbing a second win at the Doosan Consul "We've" Championship in August. She topped that with a third win and her first Major victory at the Hite Cup in October.

She became one of the few players to ever break a billion won in a season, and was aiming to break the all-time record for most money in a year set by Min Ji Park. She just missed that, but her total of 1.424 billion won was the second highest total ever and obviously the top on the money list. She also won the Player of the Year, led the league in scoring, and finished the year 34th in the world rankings. She led the league in top tens with 13, including the three wins, four second places and a third.

Lee ended the year with a peculiar event. Like most years, the KLPGA had a year-long contest where a few choice players qualified for a two round competition after the season ended. This year there was a twist: the prize money was paid in crypto-currency, and Lee won the event to earn the top award, valued at 250 million won. But the currency spiked in value, and by the time she was able to sell it, it was worth more like 800 million won. That would count as the single largest payout for any KLPGA affiliated event in history. Everything came up roses for Yewon in 2023!

In 2024, at the year's second event, the Blue Canyon Thailand Championship, the final round turned into a crazy battle between several top stars, all of whom were making big mistakes. But after hitting a shot into the water on 14, Yewon didn't make any more mistakes, while both Shin Sil Bang and Min Ji Park made double bogies. Lee carded her first win of the year, a one-shot victory.

May was a great month for her. She won her second event at the NH Investment & Securites Ladies Championship , then got all the way to the finals of the Doosan Match Play, where she lost to Hyun Kyung Park. Not to worry; she won her next event as well, upping her win total to three wins and taking over the top spot on the money list. Alas, this was the peak of her season, and she became pretty inconsitent after that. She still had top tens and contended occasionally, but she had no more wins, and in the end she finished 7th on the money list with 945 million won earned. She had 12 total top tens. It was a great year for her, but perhaps not as strong as 2023 had been.

Yewon also played two events outside of the KLPGA. The first was the Salonpas Cup, the JLPGA Major, in May. She was brilliant, finding herself leading by three strokes after three rounds and duking it out with top JLPGA player Miyuu Yamashita, who was second. But in the final round, both players struggled and were passed by amateur superstar Hyo Song Lee, who became the youngest winner in the history of the tour. Yewon finished third. Yewon's other event was the Evian Championship, but unfortunately she missed the cut in that one.