[6] She maintained a leading edge of approximately 14 seconds in the final, which corresponded to sixth-place finisher Vivien Jackl of Hungary, achieving a new Championship record time of 4:37.78 and winning the gold medal.

[12] The next day, Narita ranked first in the preliminaries of the 200-metre individual medley with a 2:14.74, which was 9.00 seconds faster than eighth-rank and last final qualifier Jimena Leguizamón of Colombia.

[20] Later in the year, in December at the 2022 Japan Open Swimming Championships conducted in long course metres in Tokyo, she won the gold medal in the 400-metre individual medley with a time of 4:37.32.

[26] In March, she won the short course 200-metre individual medley final heat open to 15 and 16 year old girls at the 45th Japan Junior Spring Olympic Cup in a meet record time of 2:08.28.

[27] On the first morning of the 2023 Japan Swim in April in Tokyo, Narita qualified for the final of the 200-metre individual medley with a time of 2:13.45 and overall rank of second in the preliminaries.

[32] The following month, she won the bronze medal in the 200-metre individual medley with a time of 2:11.93 at the 2023 Mare Nostrum stop in Canet-en-Roussillon, France, where she was the only female junior swimmer (born 2005 or more recent) to qualify for the a-final.