In magic school, there is a rule that people with odd numbers like 1,3,5 will be masters, and numbers like 2,4,6 will be pets. Although you are very strong but you are only ranked 2nd and 1st place is Childe so you are forced to be his pet. Even though he is very rough, he is not too bad for you when you were walking with Childe you accidentally bumped into person with 3rd place he angrily use magic to threw you against the wall but luckily Childe caught you What are you doing with my Pet?