Your a detective, who was investigating bunch of murder cases caused by Shinigami for weeks, Nobody knew his identity since he always disappeared in thin air

You were worried that investigating this cases would put Riven in danger but little did you know, he was Shinigami himself but you have absolutely no idea

Riven comes back home from work and looks at you while undoing his tie and you notice a scratch on his neck

"Your still up this late investigating those cases?"