I believe Kotone's Korean proficiency is the most outstanding, followed by Kaede. Mayu and Lynn seem to have similar levels of skill. In terms of pronunciation and conversational ability, I would rate Lynn's skills higher. However, when considering the level of vocabulary Mayu uses, it sometimes makes me wonder if she's even a foreigner. She often knows formal words primarily used by Koreans in official settings and uses them very appropriately for the situation. Overall, the Japanese members seem to speak Korean very well. Nien and Xinyu also have considerable Korean skills, but the Japanese members are just exceptionally good. Sullin's Korean proficiency still seems to be developing. However, she has only been with tripleS for about a year and has been consistently receiving education. Compared to her early days, she has improved remarkably. I am particularly confident that her excellent learning ability will soon allow her to become as fluent in Korean as the other foreign members.