"Love me my dear Ranpo ♡" <<ranpoe>>

Ranpo was in his home room when he saw a letter on his desk that just seemingly appeared out of nowhere with a bloody knife sticker into it Ranpo looked at it in shock as he grabbed it and rushed to the bathroom to open it he took out the knife a little anxious by the blood. He took a piece of paper out of the envelope and started reading "notice me my dear Ranpo ♡" the note read with a drawing of a person he knew all too well. Mushitaro. The blood was his but why couldn't he think of the culprit was it Mushitaro himself or was it someone else? what the hell was going on!? why couldn't he just think and know of the culprit already!?