素直クール
Su-cool is short for Sunao Cool, and is a character type like [[tsundere]] originating from Futaba's rakubaki-ban board: http://up.2chan.net/q/futaba.htm. The first su-cool image is post #32726 by [[Komiya (c-ko)]].

Su-cool girls are blunt and rarely get emotional. They confess their love early, in public if need be, and remain cool-headed, never blushing or displaying embarassment.

Artwork featuring su-cool girls usually feature an unambiguous love confession.
su-cool