My Best Friend and I Transmigrated into an Old-School Novel

[Updates are currently irregular. I'll do my best to finish the story, but it will probably be slow. When I started writing, I didn't expect this kind of story to cause me so much pain. It's the sort of thing where I can write it, but I just don't enjoy writing it at all. My friends have also been urging me to stop, or to cut it short and wrap it up quickly, but I truly don't want to abandon any story, so I'm doing my best to keep going. I'm very sorry for making the reading experience unpleasant for everyone.] Fan Yunmiao and Jiang Xintong are best friends, and both have been avid readers for ten years. However, neither of them ever imagined that, after reading countless books, they would one day become characters in one. In an ancient romance novel, one becomes a cannon-fodder concubine's daughter who bullies the heroine, a phoenix-like female lead, while the other becomes the prince's younger sister, disguised as a man and serving as a sidekick to the crippled prince. Jiang Xintong: Darling, I'm doomed. I'm going to get some guns and ammunition to protect myself. The heroine is going to kill me sooner or later, QAQ... Fan Yunmiao: It's okay. I'm the male lead's sister, so I'll help put in a good word for you. Wait, why have you become the heroine's weapons supplier? In a fantasy novel, one becomes the younger sister of the fiance who breaks off his engagement with the heroine from the start, while the other becomes... an egg? Jiang Xintong: Darling, we're done for, we're done for. Once the heroine rises again, she'll definitely kill our whole family! Fan Yunmiao: You... take care of yourself. I'll find a way to hatch first. In a fake heiress story, one suddenly ages decades and becomes a wealthy grandmother nearing seventy, while the other loses her female identity and becomes a male supporting character. Jiang Xintong: Darling, I've gotten rich, and I've gotten old. Fan Yunmiao looks at the extra bits on her body. As a danmei fan, she gets excited and starts thinking about shipping herself with someone... Later, they gradually get the hang of things and discover the fun of watching the drama unfold from the front row. Jiang Xintong: Wow, look, look! The male lead's eyes really did turn red! So the red-eyed trope wasn't a lie! Fan Yunmiao: He didn't sacrifice his life for her, so he doesn't qualify. This male lead isn't good enough. A story about best friends going through bad luck together on a quick transmigration journey, watching the drama unfold at the front lines of melodramatic plot worlds. This is not yuri, just pure sisterly friendship. Each will have her own romance, but the story mainly follows the two sisters as they adventure through different worlds. Current progress: 1. The Crippled Prince's Physician Consort (complete) 2. The Genius Summoner (complete) 3. The Fake Heiress and the Real Heiress (ongoing) Theme: When sisters are of one heart, their strength can break metal