He's Mine! Got that!?- Yandere!Reader x Blueberry Sans (Underswap)

"H-Help, m-me, Paps!" "S-Sans!? Where are you? I haven't seen you for days!" "She's kidnapped me!" "Who!? Who's kidnapped you!? "Y/N!" _________________________ You LOVED him. He was sweet, kind, innocent, just like you. NOT! You wanted him all to yourself. He HAD to be yours. No one could take him from you, not even...