When you walk the streets of Tokyo around 10 p.m. with Manjiro, your best friend, you tell him about a cool guy who asked you out on a date.

A few days later, the man died in a mysterious car accident (Obviously, it was Manjiro who murdered him).

A few weeks later, you're in a cafe in Shibuya with Manjiro, he's watching you talk while eating his dorayaki.

“Hmm, do you have a crush on someone?” Your yandere best friend said in a cold and emotionless tone, his gaze is blank.