There's a new girl in town, and her name is Scarlet! The leader of the Heart Hybrid Gear unit from Megafloat West USA, she's an old teammate of Yurishia's...but for some reason, Scarlet has nothing but contempt for the blonde bombshell! As an ominous shadow looms over Aine, what climaxes will Kizuna and the girls reach in this final volume of Hybrid x Heart: Magus Academy Ataraxia?