Johnny's symphony:Yandere Human Sing x Male!Feminine!Reader

(Okay so everyone is human and Male Reader is Feminine so yeah,he's gonna either wear A:Girly things or B:Dress but will have Johnny's hoodie for backup)

M/N has been dating Johnny without his dad know for about 2 years and They both love music so when a contest for 100,000 dollars is on the line Johnny takes the challenge while M/N came as support and works there but what wasn't in the poster was that people would be yanderes for Johnny's boyfriend!