O Button (blood Type) on BeReal

What it signals here

authentic usage

Might appear in an authentic moment where someone shares their blood type card, donor ID, or a Japanese-inspired personality test result.

reaction meaning

Not a standard reaction on BeReal; if used, would likely be part of a caption or overlay indicating blood type pride.

friend context

Could be sent between friends in the context of blood type personality compatibility discussions, especially among fans of Japanese culture.

See it elsewhere