Oh, no! I Became the Sister of the Novel's Tragic Heroine! - Chapter 1

In the current era, people are either normal or are with ‘special abilities’. Cases related to the latter are managed by the “National Anomaly Prevention and Control and Special Species Management Office”.
Qi Zheng Emperor Sheng Lingyuan was reawakened a thousand years later after he jumped off the fiery Red Lake. Xuan Ji, a newly transferred staff to the Reparations Division of the Deviant Control Office, finds himself having to clean up the mess of a revived tyrannical monarch. The two seemed to share something from the past, but unbeknownst to them, a big conspiracy is stirring right underneath their noses that could destroy the balance of the world.

- Description from Novelupdates

A bittersweet drama: As long as the heroine forgives her kindly and kindly, pays without regrets, and gives up again and again until the bad guys who bully her are old and unable to act, she will get a happy ending.

When Mercury is dressed as the heroine of each bitterness drama…forbearance? Pooh.

Terrible heroine, change her life online.

Content tags: Time travel, face slap, fast wear, cool text
Search keywords: protagonist: mercury ┃ supporting role: many ┃ others: fast wear, cool text

- Description from novelbuddy

Michael didn't want to die. He didn't deserve to die. After a lost battle with cancer that started only a year after he retired, he'd lived what many people would call a full life, but it wasn't enough. He wanted more time. Time with his wife. Time with his kids. Time with his grandkids. When he found himself drawn toward the light, he fought his way away from it. Unfortunately, that didn't take him back to the life he wanted to live. Reincarnated in another world, Michael is forced to be a Penitent, a soldier in the country he was reborn into in order to pay a debt to society he owes for taking the life of the child whose body he inhabits. It's not the life he wants, but it's the only one he has.An Isekai with light litrpg elementsMC will gain powers similar to those of a paladinBook 1 spends a lot of time in a military academy. MC does not stay a child for very long.Story will be a slower pace than my others.MC may not be to everyone's taste. He feels guilt for his actions that may seem unreasonable and is very human. He will grow, but it will take time.

The whole world is subjected to a highly dangerous standardised exam called the Global University Entrance Examination. Answering questions by putting their lives at stake, they would live if they passed the test. Every month the exam will undergo reformation while, occasionally, it is random.

- Description from Novelupdates