The heroine and the hero met on the Internet, and later found out that they were senior students at the same school. In order to catch up with the male protagonist, he crammed in science knowledge
The second boy is the captain of the school basketball team, and the second girl joins the cheerleading team for him. The second boy helps the second girl to block the incoming disaster, and they have a crush on each other.
The third woman has no man in her heart, so she draws her sword and is a god of nature. The third daughter lost her mother when she was young and had differences with her father. The father and daughter are not on good terms with each other, and they are half-brothers and sisters with the male protagonist.
Idea: If you like someone, you should work hard to be good and let them know you.