Japanese “reserved” Button on Snapchat

What it signals here

friend system usage

Sent to a best friend to signal exclusivity — 'this friendship/snap streak is reserved for you only'.

streak use

Used jokingly to 'reserve' a streak partner's number one spot, implying no one else should interfere.

story meaning

Posted on stories to claim ownership of a vibe, a trip memory, or a person seen in a snap.

snap context

Mostly used by anime or Japan-culture fans who recognize the character, creating an in-group signal among niche communities.

See it elsewhere