Luckily, Keroro still considered Fuyuki his friend, so he went for "gender change mode" just for his amusement. After the smoke faded, Keroro's eyes widened, seeing a girl that resembled Fuyuki crouching on the floor, covering her eyes from the light that came a few seconds before. She looked a lot like him and wore his clothes, except she also had hair that reached her back, small breasts, and also obviously resembles Fuyuki's mother, Aki.
Fuyuki, hearing the smoke hiss and no longer noticing the bright light, slowly opened "her" eyes. Analyzing her room through the smoke, she is surprised that none of her possessions were damaged. That's when she remembered the Keron invader still near her door.
"Gunsou, what did you..." Fuyuki stopped from the shock of her higher voice and new, strange bodily sensations. After Fuyuki saw her new body, she panicked and blushed in embarrassment. Keroro, amused by Fuyuki's reaction, laughed uncontrollably.
"I can see you're already blossoming into a woman, Fuyuki-dono," Keroro taunted after a few seconds of laughing.
"What did you do?" Fuyuki said with a little more fear and confusion in her voice.
"I used this to transform you into a girl," Keroro said, showing Fuyuki the device, "it can turn you into other things as well."
"That's awesome, Gunsou," Fuyuki said, being her usual self.
Keroro turned his back from her and grinned. "Stupid Pekoponian. Now that I see the ray gun was a success, I can proceed with Natsumi-dono and Mama-dono, then this planet."
"What?" Fuyuki asked. Keroro trembled in shock, realizing that he whispered to himself instead of keeping his thoughts in his head like he was supposed too.
"Nothing. I better go now," Keroro ran.
"Wait!" Fuyuki yelled, making the sergeant stop, "can you ___?"