So Then...It Was You (Vocaloid KAITO X OC)

Based on the songs Nazotoki and Nazokake, originally sung by Kagamine Rin and Len.

"So, who is the culprit?"

The same question repeated, over and over again.
When a string of murders occurs during a fancy boat banquet, the remaining survivors are a young man, who appears to have only one functioning arm, and a cold, distant young woman, hiding a mysterious object behind her back....

A poisoned glass of wine. People thrown into the ocean, one by one. A one-armed man. And a silver knife...

Can these riddles be solved, before it's too late? Or will this case close off as a tragic catastrophe with no way out?

DISCLAIMER: Nothing belongs to me other than my OC Mochi and this story.