The Strangers - Across the Silent Heartbeat - Chapter 16: Ultimate Surprise

Xia Yan passed through to the world of Bleach and became an eleven-year-old boy. He was rescued by Renji and Rukia in the Seireitei, and he was studying at Shin’ō Academy, and he was a student of the same class.
He is a top student of the Shin’ō Academy, and he is vying for strength by various teams. In the end, he has entered the first team of secret mobile maneuvers.
He will use punishment to kill every person who tries to threaten the martyrdom and protect his loved one.

- Description from Novelupdates

Twenty years ago, the Gu family’s eldest daughter, Gu Wan, went missing without any news on her whereabouts.

The Gu family was left with only the youngest daughter, Gu Chu, so they doted on her.

Twenty years later, Gu Wan returned. Gu Chu was thrilled and she showed her sister around the city, even giving her everything she treasured.

However, Gu Chu gradually realized that Gu Wan was here to take everything away from her, including her fiance! Their mother said, “We owe Gu Wan all of this. We all do, especially you! Gu Wan only went missing back then because you insisted on having a candy.

That’s why Gu Wan went out and ended up going missing!

She had suffered for twenty years out there! You will never be able to fully repay Gu Wan what you owed her!

Hence, the engagement with the Feng family should be given to Gu Wan!”

Their mother even said, “When we arranged this marriage with the Feng family, although we didn’t specify if it was for Gu Wan or Gu Chu, the elder child should take precedence.

Gu Wan should’ve been the first choice. And now that she’s back, she should take what was rightfully hers. What’s wrong with that?” Gu Chu wanted to defend herself.

She didn’t understand why Gu Wan would lie because she didn’t go missing because of her. Yet, the man chose to marry her sister, and that was when Gu Chu regained her senses.

It was just a man. Men weren’t reliable, so she didn’t want him anymore! Their mother even used their family’s shares to bribe Young Master Feng.

However, Gu Chu was surprised when the quiet and unsmiling Young Master Feng suddenly had a change of personality.

Three times a day, he would propose to her. Gu Chu asked, “Are you in such a hurry to have a wife?” Young Master Feng answered, “I’ve been planning this for a long time. Please bear with me.”

Later on, Gu Chu found out his secret. So he had actually been planning for a long time after all…

After struggling in the apocalypse for ten years, Yao Ran died and returned to the three months before everything began. She returns with hatred and thirsts for revenge, intent on making those who owe her pay with their lives.With her grandfather's inheritance, Yao Ran sold everything and frantically hoarded weapons, medicine, food, and supplies. She sharpened her sword, stockpiled up supplies, settled scores with scoundrels and villains, and repaid them with both enmity and kindness.When disaster strikes, she begins her revenge, facing a dangerous world, and is determined to outlast her previous life.