I want to note that he's not against killing. He's against going murderhobo without attachments. He don't kill not because he don't like killing, but because he don't want to slip.
Ever since the pizza place chapter it's as if it's not even the same person writing this manga anymore... the pacing is completely difference, the characters feel different, what the hell happened? There's also completely random art styles thrown in. Are they trying to kill this manga on purpose? Did the author get cheated out of money or something?
@Tearsax Maths. She was heading to his shop so check the route and find the abandoned car and calculate the radius in where they could be from the time a call was received with estimated variables of it taking place when she was captured or already contained...
It limits the search zone which can be more easily Worked out if you take in account the roads and turns since they used a vehicle themselves which limits the search zone even further and more so when you consider places out of public eyes considering the situation of what is happening their wouldn’t be many places and it’s impossible to be seen at all considering his sister is celebrity.
If you want a simple alternative answer he could of just sense where she was With detection, if their martial artists it would Be easy like a beacon .....It could be combination of them both though