Unstoppable Momentum! After Mamako joins Masato's class, Medhimama is determined to one-up them, transforming every new school event into a competition! But Medhimama's eyes are too fixed on the prize to notice Medhi's smoldering frustration with her until it's already past the boiling point, and she, along with Masato's party, is engulfed in Medhi's red-hot vengeance. Will Mamako's motherly insight be enough to pacify this fiery rage and mend their broken bonds? And will Masato finally see the light of his mother's love in this momumental last volume?