My Ex-Girlfriend is the Strongest Guild Master and I'm the Weakest! - Chapter 5: Emergency Maintenance (Part 2)

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

Three years into her marriage, she never felt loved.When she encountered a car accident in a torrential rain, her husband was celebrating another woman's birthday.When she came to a realization and decided to divorce, her husband disagreed. Only then did she discover that this loveless marriage had been his revenge against her.He had conspired with his ex-girlfriend to take revenge on her by trapping her in this marriage.When she and the ex-girlfriend were kidnapped together, he did not hesitate to choose to save his ex and abandon her. Her heart turned to ashes, and she turned away to jump into the sea.Later on, when she was gradually forgetting him day by day due to her health, he held her, crying and begging her over and over not to forget him.Eventually, when she became the music queen, and at the backstage of the award ceremony, he cornered her backstage, uttering a belated apology, “I'm sorry.”She smiled politely, “I'm sorry, but who are you?”

Lu Xiaoran has traveled to a fantasy world and received a system, but the useless system has not been activated for a long time. Lu Xiaoran, who had no choice, could only cultivate in a low-key manner and grow steadily. However, after Lu Xiaoran had become the strongest existence in the entire sect, the dog system suddenly activated.