Hana Awase: Karakurenai/Utsutsu

Volume 3 of Hana Awase.

A maiden's prayer shall make the flower bloom.

There is a card game called "Kasen", which is played with cards known as "Hanafuda". Only a handful of people, known as "Kaei", can call on and draw the power of the "flower". With most Kaei are men, the five students who possess the most power within the academy are referred to as the "Gokou" and are revered.