Intro

Arithmia's most influential mathematician found herself furiously walking out of a meeting, followed by a young lad clearly in distress.

-Hey, Lucy?! Where are you going? Wait for me!

-Get faster then. We're going straight to the source to eliminate the problem.

When Lucy spoke about "problems" she usually used the word "solve". This time however she was planning a murder.

*Around two weeks earlier*

Hanako closed closed her notebook labeled 'things to try', did some light stretches and hobbled to her bed. She was quite a bit tired that day, so she fell asleep almost instantly.