K received an hand-written letter from Hana inviting him to attend her wedding with L.
It was written:
"I am eternally grateful to have you as my personal trainer. You have made me into a real woman. The months I spent with you were unforgettably pleasant. Allow me to call you master. And looking forward to the time when our paths cross again. With love, Hana "

So K attend the ceremony, and witnessed the moment when she said "yes", committed her life to L. She turned her head and smiled at K with a loving a longing expression.
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A few days later, K receive a letter from L.