itsladykit:

Here. Have a headcanon.

Intent is exceptionally important in monster society. It defines the difference between play fighting and true combat. It’s infused into the food they prepare, imbuing it with healing (or toxic) properties. It’s even knit into the very fabric of their clothing. Every stitch, every fold is infused with the intent of the monster making it. A skilled fabricator can even create clothing that boosts a monster’s stats, though this clothing is exceptionally expensive—particularly in the Fell-verses.

Sans isn’t quite that skilled…but while he’s making his brother’s battle body, he reflects on how much he cares for his brother, how much he wants him to be happy and healthy and safe. His love seeps into the costume as he makes it, and when Papyrus puts it on, he can sense his brother’s love and care. It makes him feel protected, cared for. It makes him feel special.

He can’t bring himself to take it off, in fact. Can’t bear to be parted from the reminder of just how much his brother cares.