God Simulator - Chapter 115: Gods also unite

As a boss with space plant abilities in the apocalypse, Lu Yao once traveled to the future, became the director of a nursery school that was about to close down, and became a rare animal human on the verge of extinction.
The food she made at random can cure the genetic disease of the cubs in the welfare home. She punched the cubs’ scum fathers and scum mothers, and kicked the remarried families who abandoned the cubs.
It is such a good kindergarten successor dean, who is attracted by that single cool imperial marshal!
Since then, the barrage in the live broadcast room has become:
Imperial Citizen A: Dean A, I really want to marry.
A certain big black dragon: Shut up! This is your marshal’s wife!
CP: Dean Lu Yao, who is extremely protective of short-sightedness and loves cubs, X the imperial marshal Helanjia who loves Shang Yunxi more than cubs
Brief: There are no bad cubs, only bad big ones.

- Description from novelbuddy

One day, Luo Jian woke up from his sleep and found himself in a locked chamber where the door and window were all sealed. A note with a few lines written on it was tacked to the wall: “Escape from this room within an hour, otherwise, you will die.”

There is a sequel called Reincarnation Night (轮回之夜) that takes place in the same universe but has different main characters

- Description from Novelupdates

When they first met, Tang Wan sighed, “The fifth young master of the Jiang family is just as the rumors said. He’s celibate, aloof, prideful, and is a man to be revered. Unfortunately, he’s so smart that he no longer has any will to live, which made him sickly, and he’s going to die soon…Later on, the fifth young master brought her into his room. When she came out, everyone stared at her in shock.Why was she crying?……Later on, it was said that the fifth young master returned after he recovered from his illness, and he brought a girl back.She appeared pure and harmless, but underneath that harmless appearance, she was actually a spitfire that offended quite a number of people.But the fifth young master just said, “I brought her back, so I’ll let her do whatever she wants. If… anything happens, I’ll take responsibility.”His best friend gave him a reminder. “You’re going to be responsible for someone from the Tang family?”“Since she came back with me, she’s mine. She’s just a young girl and is spoilt. I have to take responsibility.”After Tang Wan married into the Jiang family, she only had one mission. She must give birth to his children before he died!Meanwhile, the fifth young master was puzzled. “You’re a gentle and shy girl during the day, so why are you so different during the night?”Tang Wan thought. ‘I have to make every second count. He won’t be able to live long.’After she gave birth to his son and he became one year old, Tang Wan was prepared to become a widow.However…‘Why isn’t he dead yet?’Much later, the fifth master of the Jiang family asked her, “I heard that you’ve been looking for my death every day. Do you want to kill me by sucking me dry?”

When The Cute Kunoichis Spied on Their Teacher's Secret is a light novel written by Kazuma Kamachi and illustrated by Ryuushi Tajima.

The story takes place in a world where Japan never ended their isolationist phase, and agents from foreign powers are always threatening to steal the country's advanced technology. In order to combat this threat there has been a resurgence of ninjas that use Strategic Martial Arts, techniques that combine cutting-edge modern technology with a traditional foundation of martial arts and ninjutsu. The story follows Souha Sugiyado, a 17-year old ninja instructor and former ninja prodigy who was forced to retire from active duty by the wounds he suffered in his last mission. Souha's four students are all kunoichi who have all gained the rank of Elite Ninja, the highest official rank available to ninja. However, one day two Shogunate ninja approach him with the news that his four students have gone rogue and have stolen a portable modular nuclear reactor, and thus they ask for his help in bringing his students to justice.