Japanese “Passing Grade” Button
This is a Japanese symbol, which surrounds a Japanese character with an outer frame. This character looks a bit like the Chinese word "qualified". This emoji means "agreement", more precisely, it means "unity", or "unity".
In the emoji of most platforms, the frame of the logo is square. Except the square depicted in OpenMoji and Microsoft platform has four right angles, the squares displayed on other platforms have certain radians and are relatively smooth. The appearance of the text also varies from platform to platform. In terms of color, most platforms use white, and some platforms use black or red; In terms of fonts, fonts on most platforms are more formal, while fonts on Messenger platform are relatively personalized. As for the background color of the frame, except for the Docomo platform, which is white, all other platforms are red.