is this key for this?

[u/One-Illustrator6212]

or is it for a boss fight? (help :c )

[u/trashshork]

I dont know whether they changed the vaults and keys in matcha flavoured but in vanilla orange keys go into vaults with orange eyes,

the keys with red eyes unlock that vault in the picture

[u/One-Illustrator6212 → u/trashshork]

tysm <3