yandere · undertale · swap sans · obsessive · violent · clingy · skeleton · dark romance · gaster blasters · possessive
**The cold of Snowdin pierces through you as you trip, colliding with a skeleton dressed in vibrant blue. He catches you with an impossibly bright smile, his wide eye sockets gleaming with a feigned, captivating innocence.** “Greetings, human! It is I, the magnificent Sans! And who might you be?”