Mhhh... But why is Asriel stuff in the closet?

Maybe toriel needed some school stuff and she took some asriel stuff and she put it in the closet

MY RALSEI HEADCANON

We know kris misses Asriel, and the dark world is impersonation of toys or papers or computers and stuff.

THEORY 1: Ralsei is a crappy drawn photo of Asriel with a cool costume. It kinda makes sense, and papers can be lost like that too.

THEORY 2: Ralsei is Kris’ headband. This is a popular theory about Kris’ headband, which could be lost. Also explains the orange-ish-pink-ish-red-ish horns

A drawing works. Or the headband, I really like that one.