Owari no Chronicle - Volume 2, Chapter 22: Unforgettable Secrets

Overnight, Tangning became a big slave owner in the southern United States with three large plantations and hundreds of black slaves who could be driven at will.

Tangning was very satisfied with the result of such a time-travel, but then he sadly discovered that he could only enjoy three years of such a good life, because three years later would be the “Civil War”, what should he do after this?

- Description from novelbuddy

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

Volume 1 (Set between volumes 13 and 14)

A series of short stories set before the events of volume fourteen including how Team GROUP was formed.

Volume 2 (Set between volumes 16 and 17)

A series of short stories including two separate meetings between Touma’s and Mikoto’s parents, two tales involving two of the Level 5s of Academy City, and other funny stories involving some of the characters.

“She's back, let's get a divorce.”After three years of secret marriage, he suggested divorce when she faced a family's crisis and was pregnant. He also turned a blind eye to her plea for help. Disappointed, she concealed her pregnancy and signed for divorce.She thought they would be strangers after the divorce, but her pregnancy was suddenly exposed.When he proposed remarriage, she angrily said, “I only want to keep the child with me, and if you want to see them, kneel down!”She thought he would give up when faced with difficulties, but she really underestimated his abilities.Soon, a video of him kneeling and begging for reconciliation was displayed throughout the day on the outdoor big screen in the most prosperous area of the city.