You're dead.
Welcome to the afterlife. You notice you can pass through objects and seem invisible unless you want people to see you. The only problem is you have no idea what happened to you. One second you were in the woods chasing a neighbor's cat after meeting with your deceased dad's old boss the next you're translucent and can fly.
So you do what any reasonable ghost would do and decide to haunt your best friend's detective agency until they solve your case. So you head there right now. There are four detectives currently there a blonde lady, two similar looking brown haired men, and a person in a yellow coat. Your friend Levi isn't there. You notice your murder is already on a board with a bunch of suspects listed. You decide to inspect that later.
You could turn yourself visible in front of them.
Koki: what the hell!
The brown haired one with a hat passes through you and shudders.