He transforms his brother into a Fate/Grand Order servant

Randy was a huge fan of Fate/Grand Order, and he always wanted his own servant from the show. So, he pictured a character from the series in his mind, a favorite of his called Kama, and aimed the remote at his brother. The brother laughed at him, wondering why he was aiming a remote at him. “What the fuck are you doing? I’m not a TV, dumbass. Maybe watching all those cartoon shows is making you lose braincel–” He wasn’t able to finish his sentence as the beam from the remote hit him and started to transform him.

Randy's brother stumbled and felt a strange sensation as his short hair began to grow. He noticed his hair occupying his vision, so he reached and grabbed one of the strands on the side of his head. He saw it change color, going from brown to silver, and he freaked out, "What the heck! What's going on with my hair? How did it grow and just change color?"

He shrank in height, going from 6’2” to 5’6”. The muscles he had spent years growing faded away along with his body hair. His skin became smooth and soft, while his bone structure bent and changed, giving him an hourglass frame. Fatty tissue increased on his chest, growing until two pairs of breasts rested on his chest.

At this point, Randy's brother was panicking at the dramatic transformation his body was undergoing, "Holy hell! My body—my muscles are gone! Why do I have boobs? How is this possible?" He looked at Randy and the remote he was holding. Randy stared back with a half-cocked smile. He could see the changes progressing on his brother's face as it became softer and more feminine. His eyes grew bigger, his lips plumped up, and his face began to resemble that of a beautiful goddess.

“It's you! You're–" He cut himself off when he heard his voice. No longer did he have a deep, manly voice; now he possessed a cute, high-pitched girly voice. "My voice, what did you do? It's that remote you're holding. Change me back, master," he pleaded. He paused, confused, wondering why he called his brother 'master'. "I didn’t mean to say that… Ugh, my head hurts. I can’t think."

Randy's brother's mind began to fog as the mental changes were modifying his thoughts, making him believe he was Randy's faithful servant, Kama.

Randy's brother was trying to fight the mental changes overwriting his mind, but it was a losing battle. He began to forget who he was and his memories.

"No, no, no! These thoughts, my name is Steve! My name is Steve... my name is... Kama." Randy's brother was gone, both in body and mind. The new woman who used to be Randy's brother turned and faced Randy.

"Are you my master?" she said.

Randy was on cloud nine when he saw the woman in front of him ready to dedicate her life to him. Without a second to lose, he replied happily, "Yes, Kama! I summoned you. My name is Randy, and I am your master."

Kama smiled and bowed, "I am Kama, the god of love. I will do whatever you require of me, master."

Kama looked down at the clothes she was wearing; she still had Randy's brother's original clothes. "This won’t do; I must look my best for my master." With a snap of her fingers, the baggy clothes disappeared and were replaced by a revealing outfit that barely covered her entire body. Satisfied with her new attire, she looked at Randy, her master, enjoying how he stared at her with lust.

"So, master, how can I help you?" she asked.

Randy was amazed. Right in front of him, who was his brother just five minutes ago, was now the real Kama, ready to serve him. Without a moment to lose, he issued his first order to his new servant.

"Go to my room and take this book and that figure on the table with you, and wait for me. I will join you shortly."

She grabbed the figure and the book that used to be Randy's parents and skipped away, humming happily along the way.

Now, Randy, with the remote in his hand, pondered that there was one more person in the house he could use it on. However, he hesitated; he did like his sister, and perhaps he should spare her. Yet, she's going to wonder where everyone is, and that would make things difficult to explain.