BEFORE ASU:
- Competed at the Mare Nostrum in Barcelona and made three finals in the 50m, 100m, 200m breaststroke. Set a season best in the 200m breast in 2:15.80.
- Munn competed at the European Junior Championships (LCM), where he turned in his fastest 100 breast time of his career, touching the wall in 9th (1:01.64).
- Representing Sweden, he appeared at the 2025 World Aquatics World Cup in Toronto with three personal bests in all three breaststroke events. (50 Breast - 27.13, 100 breast - 59.30, 200 breast - 2:10.04.)
- Swam at the 2025 LEN European Junior Championships where he placed 9th in the 100 breast in 1:01.64 and 10th in the 50 breast in 28.01.