Singers In Disguise (Kagamine Len X Reader)

"I'll still love you even if you ended up being a yandere and kill me when you loose all of your sanity. I would love you forever and ever. I'll be willing to sacrifice myself for the means of protecting you the one I love."

"Heart began to throb looking at his so innocent smile. My heart is forever yours and your heart is forever mine. I'll become evil for the means of protecting you forever."

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What happens when a pair of twin singers goes to school in disguise? The arrival of a popular Vocaloid in school made the girls go crazy. Suspicious grew in the air. A player seeks for his true love but, will a player change to becoming the good boy? Or will he continue being the bad boy in school playing with his victim for his selfish desire. The cruel past of the two demons from London who will just kill anyone to feed on? Jealousy of a group of girls? To sum it up, a mad girl who is really crazy for popularity. Old and new faces starting to come and go. Couldn't life be more 'interesting' for these two twins?
And it all started on that faithful day....