Teacher Tsunayoshi from the Parallel World

Tsunayoshi in this world did not meet his teacher, did not become Vongola's tenth generation, and lived an ordinary life. Due to his poor grades when he was young, he became a migrant worker early after graduating from junior high school. Suddenly, a system found him and asked him to go to various worlds as a teacher to teach students to complete tasks. A Gang: With the knowledge I have, can I still become a teacher and teach knowledge? System: Of course! The system said that he was asked to teach a group of problem children, all of whom were elites. He did not need to teach them any knowledge, but only wanted him to spread the beautiful qualities of truth, goodness and beauty, so that they could let go of the hostility in their hearts. A Gang:? ? ? A Gang originally refused to obey, but the system forcefully transferred him to another world. He could not resist and could only complete the task and return home as soon as possible. From then on, Tsunayoshi battled wits and courage with various problematic characters, including a vampire aristocrat who took action against him, a cold and twisted family, and some mafia with explosive intelligence. But even though he was so dangerous, he also felt a little warmth, such as the secret care of a certain fox, and the delicious food of a natural girl. Tsunayoshi slowly honed his powerful martial arts and firm heart, and cherished everything he had in front of him, whether it was good or bad. When he completed all the tasks and returned to his own world, he thought he could finally live a stable life with his mother, but then a man suddenly came to the door and said that he had the blood of a certain family and that he was here to teach him to become an excellent leader. A Gang:? ? ? Do you know what my profession is? Big R:? ? ? Is this different from what the information says? … Advance payment: "When I Have a Reversal System" One day Chigusa Minamoto suddenly had an ability——[Reverse System] The ability to reverse anything. When he gained the ability, he heard a voice from the underworld. "How far can you use this ability?" Of course I want to do good things and make the world peaceful, Minamoto Chigusa thought. Turned Xia Youjun's magic ball into a delicious ball - thank you very much. Reversing the relationship between Dazai and Jiuye - from partners who hate each other to close friends who love each other. Transform the child who is the god of death into an angel's body - he will be happy and live in harmony wherever he goes. Turn the spell of negative emotions into positive ones - and make the world a better place! Minamoto Chigusa thought happily: "This ability is really good, everyone must feel very happy." The few people who were harmed did not think so. Dazai: Why does it harm me the most? I don't want Kunikida-kun to turn into an obsessive-compulsive workaholic, nor do I want to become good friends with Slug! Jiuye: It's disgusting to be friends with mackerel. 5T5: I will actually become a gentle mamasang character? Wannian primary school student: Do I really have a death constitution? "Hey, are you just playing with us?" The victim said dangerously. Minamoto Chigusa (watching the show): Smiles will not disappear, they will only shift. Although you have lost your happiness, everyone has a smile on their face. Mission: Good teachers will lead students to a bright path