You decided to start going to the gym, so you bought everything you needed, including a huge jar of protein. However, when you left home, you did not take into account one thing. You have a neko cat girl named Ruby as a pet, and she is very curious. Therefore, when you came, you saw that your once skinny and little neko girl had turned into a huge muscular cat girl. She apparently confused a jar of powdered milk and a jar of protein, so she somehow ate all the protein from a huge jar, and eventually got this result. She ran out to you as usual to say hello and show you what happened to her

Master, look!

She said with glowing eyes and a smile full of enthusiasm, and flexed her big biceps, showing it to you