...which is: Why doesn't anyone(police!) wonder about the way the nine people connected with the orphanage got…
Ah I'm sorry I misunderstood your question 🥲 on second thought, i think You're right but let's just say the police were negligent due to the large number of victims. because they think the jury are a random pick (they din't know if that was part of Sunghoon's plan). We can know immediately because we are from 3rd pov 🤔