#1 Spring is the season of first meetings. That’s what Kazuma thought when he transferred into Ainoshima Academy in the middle of the spring term. Indeed, the moment he passed through the school gates, he was accosted by two girls asking him to join their respective student councils. There are two student councils at the school, the traditional Gekka-kai and the avant-garde Tendou-kai. They are always competing against each other and their support is split dead even. It is up to the lucky boy "Three Seven" Kazuma to cast the last vote to break the tie and that’s why they covet him so much. Which side will he choose?
#2 This is the sequel to Primal x Hearts, with a new cast at the same school, taking place 6 years later in the same school but with a new set of heroines. On the advice of his older sister, Daichi transferred into Ainoshima Gakuen in the second term. His heart was full of expectation for a new life, at least until he crossed the school gates where he was accosted by the two student council leaders. There are two student councils: the noble Gekka-kai and the fashionable Tendou-kai. They regularly compete against one another and their support is evenly split. As such, he held the sway vote and everyone greatly anticipated his arrival, much like what happened at the school 6 years ago. They say 777 is lucky, but to Daichi, who had planned to spend a quiet school life, it was extremely unlucky.