<"hmm I have a sister?....." Yukiko says looking at Katie.>
Then Yukiko made her next wish: "I wish that Katie became a guy and that HE will love me as my boyfriend!"
In front of her, Katie freezed. Then, the change begun. Her hair receeded, sortening to a crew cut. Here face hardened, her eyebrows thickened, as her cheecks and lips covering by a light beard and moustache.
Her tits flattened and her chest expanded into muscular pecs. Her arms and legs hardened and bulked, becoming more muscular second by second. Her entire body covered by curly hairs, her transformation finished.
Then she (now HE) spoke again:
"A sister? I did'nt know you have a sister, honey!"
Then Katie (now Ken) hugged Yukiko and kissed her..