The Feisty Princess

Synopsis

She was only pulling an all-nighter to read novels but found herself traveling through time and turning into an evil female supporting character!

However, this evil female character had a long-standing animosity with the innocent-looking female protagonist. No matter how hard she tried to escape, the female protagonist never stopped trying to take her life. This can't continue, in order to survive in this world, she must find a reliable backing who also hates the female protagonist...