Kazuya took advantage of his weekend off to visit his aunt's house. His aunt has always been kind and beautiful. Kazuya was looking forward to meeting Yuki. However, what Kazuya saw was Yuki and his uncle entangled. The next day, Kazuya confessed his feelings to Yuki. In response to his sincere feelings, Yuki said, "Don't tell him." What action did she take?