1. Qin Zi, 15 years old, has no experience in the world and does not know the hardships of the world. Thinking that he can change the world, the idealist returned to the age of 7 and began to change himself, wanting to become stronger.
2. Chen Chuan, 20 years old, repeated his studies for two years but failed to get admitted to his ideal university. He jumped up and woke up to find that he was 7 years old again. He really began to understand the meaning of life and find the true meaning of life.
3. Lu Qingchuan. 17 Years old. He is in the most beautiful season of his life. He is a bit petty, but he is not a very evil person. He always thinks that he is a little smart, but he doesn't know that someone has seen through him.
4. Mo Xiaoxiao. 18 Years old, an adult age, but a little short-sighted. He always believes that everyone in the world is a good person, so he is not too wary. But he is overly aggressive and sometimes does things without considering the feelings of those around him, which can lead to resentment.
5. Liu Zhouyun. At the age of 19, he was shy but addicted to gaming. He had many quarrels with his parents because of gaming, and unexpectedly encountered an accident when he ran away from home. When he returned to the age of seven, he had a new understanding of life.
6. Che Yun, no matter what she does, she will be misunderstood. Everything is her fault. She has had enough! Returning to the age of seven after hysteria, he was destined to live a different life.