Hero? I've Long Stopped Being One - Volume 1 Chapter 21

The head of the London Association of Mages, the most powerful Saint Archmage in the world, Audrey Davis, accidentally transmigrated to another world due to a magic accident. She was an 18-year-old human girl.

Rainer, an amateur arcanist and college student, sought to create a new spell far surpassing the magic of the few he inherited from his grandfather. Yet the interference of an unknown event during the casting of his spell led him to be thrown through space and time.

When the beautiful lawyer, Jiang Yao, woke up, she transmigrated to a novel and became the green-tea female character of the novel. Throughout the story, this character has been creating strife between the male protagonist and female protagonist, and finally met her tragic end.

She have all the money, beauty, and wisdom, and yet, they expect her to cling to that dog man? Only crazy person would continue to lick that dog!

Lawyer Jiang quickly turned around and went to hug the thigh of the main villain, Lu Che.

Although he is now covered with patches and despised by everyone, but in the future, he will be a famous business tycoon.

So, when the educated youth site was on the verge of collapse, Jiang Yao took the initiative to take refuge in the Lu family’s house.

However, when Jiang Yao happily lived in the Lu family’s house, she noticed that, the way the fierce man looked at her became more and more suspicious…

- Description from Novelupdates

Based on the popular Vocaloid series, by HoneyWorks, called “Kokuhoku Yokou Renshuu (Confession Rehearsal)“:

Natsuki, a third-year at Sakuragaoka High School, who holds unrequited feelings for her childhood friend, Yuu, who’s in the Film Club. However, instead of being honest about her feelings, she makes him be her confession “rehearsal” partner. Unable to say her true feelings, things start to get complicated when Miou and Akari, who are also in the Art Club, get involved! Will she ever be able to confess for real!?