In one sentence:
When he was six years old, Tang San picked up a junior sister in the Star Dou Forest. The junior sister doesn't like to talk much, but she knows how to fight, protect her, and sit on the window sill in the middle of the night to watch the moon and eat candy. He also owes three kilograms of strawberry candy. Later, she became the favorite of the Shrek Seven Devils, and Tang San became the best man in the continent at buying candy.
Introduction to the serious version:
Wangshu is an orphan. When she was six years old, she picked up a master and a senior brother while fighting a mandala snake in the Star Dou Forest. The senior brother's name is Tang San, a martial soul from Blue Silver Grass. He doesn't talk much but is a nice person. The most important thing is - he said he owes her three kilograms of candy.
She had never been treated like this. Some people remember her birthday, some buy her candies, some stand beside her when she fights, and some silently put the meat from dinner into her bowl when she is staring at the moon in a daze.
But she originally wanted to be alone.
Fighting soul beasts alone, practicing alone, eating sweets alone - her outlook on life is very simple: do whatever you want to do, and don't do it if you don't want to do it. She doesn't owe anyone, and she doesn't need anyone to owe her anything.
Until that group of people showed up.
The master was serious and rigid, but he secretly helped her change her practice schedule. The senior brother was gentle and silent but put all the best things into her arms. Later, there was a group of guys called the Shrek Seven Monsters. Each one was obviously weirder than the other, but each one was weaker than the other. They forcefully dragged her from the moonlight into the sunshine, covering her "alone" ice shell thoroughly.
Wang Shu finally figured it out - since he couldn't avoid it, he should keep it all.
Candies must be collected, people must be collected, and third brother must be collected even more.
It's not a loss for her anyway.