My Simulated Road to Immortality - Chapter 470 - : 442

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!?

I was reincarnated into another world, and I’ve brought the Horadric Cube from Diablo II with me.
Being a knight is cool and all, but being a wizard is pretty neat as well.
So, which one will it be?

- Description from Novelupdates

In this world, there are people who are born to suffer. They have no home, no children, no relatives, and even die tragically at the end, just like Qin Xiangnuan, who carried her burdens alone. In her thirties, she is just a flower that bloomed only to wither in her declining years, and she also has nothing.There are also those who are born to enjoy blessings, possessing wealth, beauty, a capable husband, and smart, beautiful children, yet they still take someone else's life, just like Qin Xiangmei. Though being biological sisters, she plotted against her sister from childhood until her death.If it weren't for rebirth, Qin Xiangnuan would never have known that her half-sister, Qin Xiangmei, not only took away her father and her elder brother's life but also the only keepsake her mother had left for her, and even a tremendous opportunity.