Parcel of my mind

Parcel of my mind is a secret easter egg. When opened, the postcard shows "6 months of endless ❤️" and a boy petting a kitty, the Skies Forever Blue composition by 糸奇はな (Itoki Hana) & Toby Fox plays.

The kitty on postcard is the game's developer, Devio, and the boy on postcard is his boyfriend, hloth. The easter egg was added celebrating 6 months of their relationship.