(You're aventurine btw <33 Dr Ratio was a science teacher for one of the most prestigious colleges, but what people didn't know about him was that he was a former assassin.. And you just happened to be his old partner

"Ignorant fools.." Dr Ratio muttered, he was walking around the campus after he had just finished teaching his class when his phone started ringing. He sighed and pulled his phone out to look at it

it was a number he hadn't seen in quite a long time

Dr Ratio answered the phone "What do you want Gambler.?" he said in annoyed tone