Isekai'd as a side character

I became the secretary of a tyrant in place of my clumsy brother to survive.
But I have so much potential for it. I’m so darn good at my job. Because I served the tyrant so well, everyone must have a happy ending.
Well then, shall I quit being a secretary and live a leisurely life now?
“Do you want to die?”
○
○ : drugging; attempted rape (not between main couple)

She thought she was dead but she woke up inside a novel as an extra who will die a year later.
Not wanting to die like this, Alexa decided to tame the male protagonist in the form of a dog. Two years from now, the male lead will return to his human form.
○
○ : suicide

The dainty flower idol Chen Cong Rong unluckily fell into a trap and awoke to a stunning naked man in her bed! Hahaha, is it okay to be with such a beautiful man? Hang on... Are you telling me I've switched places with the toxic, evil, and manipulative side character who won’t even survive 20% of the plot?
○ /
○ : murder; sexual assault

I was reincarnated as a supporting character in a novel. And on top of that, I had the role of a “magpie bridge” inside the romance story. Romance was impossible, and my future seemed bleak with my debt-riddled family.
After becoming a civil servant, I tried to enjoy the wealth and honor I couldn’t have in my past life, but unlike the originals, the male characters seem kind of strange.
○

I witnessed the novel's villain murdering someone and got caught. I can practically hear the bell signalling the end of my life ringing. However, what he gave me was a ring.
○

I’ve reincarnated as Ninaina, fated to die once winter comes. With weak stamina, I have such a tragic life that I even have to endure assassination attempts from my grandfather.
Receiving the order that he has to keep Ninaina alive, Kaiser comes to her side and protects her. “You will not die. For now.”
○
○ : maternal death; suicide (mentioned)

One day, I opened my eyes and found myself in prison. That’s right. Out of all the characters I could’ve reincarnated into, I woke up inside a 19+ romance novel as the villain’s younger sister. To make things even worse, I was locked up inside the infamous Kambrakam Prison for my brother’s crimes.
○
○ : rape mention (I'm assuming it was rape coz the circumstances sounded very noncon); attempted SA

I transmigrated inside the novel of my favorite character, the second male lead. A tsundere who listens to all the words of the female lead while grunting, with a straight forward personality, and a handsome face.Matching all my preferences, he was even single after the ending.
However, I overlooked one thing. The tsundere, who had been abandoned by the female lead, blackened and had become a terrifying man.
○

Ripley decides to make the best of her reincarnation as an extra in a novel she enjoyed, but it ends up going south. She can remember up to drinking alone in a corner at a party, but she woke up the next day in the male lead’s bed.
○
○ : sex w/ one party drunk; kidnapping; attempted rape; attempted suicide