Lore: While sans goes inside of the school, he went probably seem happy, when Serika wasn't agreeing on sensei, sans goes to her, but she didn't listen and she just attacked with his own front skull, before they argued each other when he's mad before he hits her, before sensei and his students stopped, before she cried.

When sans was completely injured on his skull and goes to repair it, Serika goes on to him and feel sorry for him for his anger issues, but he accepted it, and she would agree on sensei.

She was not a shy girl anymore, she was just feeling bad for him to argue, and tell everyone lies.

Sans was not lazy more, he was a great student.

Curiosities:

1: He still sans, but he has a 5.5 HP.

2: His skills are incredible and tremendous before she has.

3: He was not slacking off, a lil bit, maybe just a lil more energetic.

4: His still don't want to talk, but he was talking, as usual.