First, if it's a digital 'power op magic light novel', you need to locate the file on your device. It could be in an e - reader app or on your computer. Then, depending on the platform, there are usually options like 'delete' or'remove'. For a physical copy, you can just throw it away or donate it if you don't want it anymore. But this is all assuming 'delete' is used in the sense of getting rid of the novel itself.
I'm not entirely sure. 'Delete' means to remove. 'Power' could refer to strength or ability. 'Op' might be short for 'overpowered' in the context of a light novel. And'magic light novel' is probably a type of light novel involving magic. But it's a rather strange combination without more context.
Ruby could be a great main character with an OP power. Imagine if she had the power to teleport short distances instantly. It would enhance her already amazing combat skills and make her even more effective in battle. She could use this power to surprise her enemies and quickly get to her teammates in need.
One idea could be a character from our world being reincarnated into the RWBY universe with an OP power like the ability to control time. They could use this power to prevent major disasters in the story, like stopping Salem from causing chaos in the early days. Another could be a character who has the power to instantly heal any wound, which would change the dynamic of battles as they could keep their teammates alive no matter how severe the injury.
There might be some light novels out there that combine elements like powerful magic and game - like power systems, but it's not common to specifically have 'burns down company' as a central theme in light novels. You may need to dig deeper into some niche or indie light novel collections.