Another Note - The Los Angeles BB murder files

There's a serial killer terrorizing the streets of Los Angeles, and the mysterious clues he has been leaving in his murderous wake seem to be taunting authorities. Onto the scene comes the L, the best crime solver in the world, to untangle the case. He recruits Naomi Misora, an FBI agent on a leave of absence from the bureau, to be his eyes on the ground, and soon enough she finds herself working alongside the decidedly creepy Ryuuzaki, who claims to be a private detective hired by the families of the victims. But as the mysteries start to unfold around the two of them, it becomes clear that L and the killer, whose name is Beyond Birthday, have a mutual past—something that has to do with Wammy House…