Mama's Favorite: A Yandere! Sugawara Koushi x Reader Love Story

[I don't own Sugawara Koushi or any of the other characters from the anime, "Haikyuu!!"] [PS: For those who read my other Yandere book, you'll probably catch a few references here and there. And in this world, your lover knows a thing or two about your past...relationship.] ...You're my favorite person in the world...