Reaps Gives Deets

The Grim Reaper is on a frenzy, having freshly decapitated a seventeen year old boy. The scene is set in Restate Town, which is very large yet is very non-violent. The "crimes" that happen here are bicycle thievery and insurance frauds. The namesake police station, with two old-aged officers, are put in a difficult stance on this strange never-before-witnessed violent act.
The Reaper is seeking someone, someone who would be responsible for something unexpected and calamitous, if not retrieved. And the kid who got slit, he has two friends who are destroyed by the engulfing sadness. But if they ever met him, he would PAY.
Read this tale, said in a strangely "comforting" style.