The Werewolf King's Bride - Chapter 13: The Tour

The next morning, Jian Anning asked, “What is happiness?” Yu Xingxing hooked his lips into a smile and suddenly pulled her into a tight embrace. “Happiness,” he said, “is being with the one you love and doing things that make you happy. Let's continue, wife!” Jian Anning kicked him off. “Get lost!”

It’s a trend to take your grandfather along with you when passing through to another world, but we have kind of been cheated—have you ever experienced buy one get eight free?

Hong Xiaobao: “This opponent is a bit formidable. All you old-timers, hurry up and save me please! If you don’t appear, then this prince is going to get angry!”

Demon Emperor Meng Xianji: “Mockers, kill! Those who defy me, kill! Strong people, eat! Valuable treasures and materials, eat! Good equipment, steal!”

Wine God Xiao Sanshao: “Why must you be so brutal? If there’s something wrong, can we not just all sit down and have a nice chat? I’ll teach you how to taste wine, youngster!”

Medicine Immortal Tian Can: “You guys chat first. My condition today isn’t very good, so I’ll go rest first…. If you want to concoct some medicine, tell me after I wake up….”

Godly Craftsman Xi Hong: “Didn’t I just upgrade your equipment yesterday? What are you afraid of? Attack, youngster! Isn’t that right, Chen Nan?”

Formation Spirit Chen Nan: “En…. How about you go ask Mao Yue.”

Beast Emperor Mao Yue: “Today’s sunshine is too bright. I’m recalling that cat of mine who died because of menstrual pain….”

Hong Xiaobao: “Can you guys not be so misleading?”

- Description from Novelupdates

A man who was once called the world’s strongest agent ended up becoming a teacher after his retirement, to train a new generation of agents. After many years of training his disciples, he was killed at the age of 60 by a secret organization’s ruse and was reincarnated in another world with his memories intact. Though he was surprised by the existence of magic and the strange species in that world, he quickly adapted to his condition as a newborn and took advantage of it. He acquired special magic and gained a massive amount of strength thanks to his rigorous discipline, in order to reach his goal: Resume his career as a teacher which he left halfway through in his previous life. This is the story of a man, who, based on the memories and the experiences of his previous life, became a teacher who travels through the world with his students.