Baka to Test to Shoukanjuu‎ - Volume 7.5, Our Song by Yoshii Akihisa

In a world consumed by monsters and chaos, survival is a cruel game of fate.Every year, the system selects a group of unwilling teenagers by lottery to fight, a death sentence Olivia didn’t ask for. Betrayed by her family and forced to fight, Olivia barely escaped death.In her near-death encounter, her system awakens….. only to deem her abilities “Useless”. But a chance encounter with a mysterious white snake sets her on an unforeseen path.Now, with the monsters lurking in the shadow, she has one goal: survive, grow stronger, and uncover the truth behind her fate.Survival is just the beginning. The real war is yet to come.

CEO Leng Li: The sky has finally cooled down. It’s time for that person who bullied my sister to go bankrupt.

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Jie Ao –xianzun (officer of Emperor Jie): The emperor is not allowing me to marry my junior sister? Good! Then, both of us are going to elope.

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Overbearing Regent: This is my little princess! What do you mean by thousand pounds of gold and precious nobles? All of you kneel down to her!

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Tong Su only wanted to complete her task of eradicating the scum male in order to get a chance to exact her own vengeance. However, this big BOSS, why do your eyes show such emotion towards me?

Important note: Sweet pet, oppressive slag, fake brother and sister, not blood related!

- Description from Novelupdates

Fick, who transmigrated over to a world of magic, and was tied to a godly choice system at the very start. Henceforth, he would have to choose from three choices in everything he did, with each choice being rewarded generously.

A wicked mother one day brought home a girl. The child was the hidden legitimate daughter of the duke, the heroine of [The Duke’s House Has Three Sons and One Daughter] Loretta. I was Melody, the villainous girl who tormented her and was condemned along with my mother. Not wanting to die like that, I decided to start treating her well now. I personally fed Loretta, put her to bed, and played with her. And then her reaction was…? “I want Melody to marry me!” Caught off guard by her endless affection, I too ended up entering the duke’s family, “I’ll stick right by Miss Melody’s side.” And there, it seems I’ve met a young lord who’s an even bigger ‘Melody fool’? All I did was be kind to survive, but why am I being loved…?!