The reason I love writing kevin day fics is because technically speaking we don't really know what he is really like we see him through the eyes of everyone else and each pov Jeremy jean or Neil see Kevin differently which means Kevin is faking his personality to match the person he's with.
Who is Kevin? We really don't know but I sure as hell will write him in the most manipulative and coldest way he can be because who can say it's not canon you don't know Kevin either










