Kokoa thanks Moka's inner self for saving her life, but the latter tells her to thank Moka's outer self for trying to save her even if she was still under the spell. All the girls have gained popularity and have received fan letters from incoming freshman girls. The next day, Tsukune manages to pass the midterms, thanks to Moka's notes. Rubi learns from Tsukune that Oyakata had died, but Rubi is in denial. Afterwards, he wakes to find the pink-haired Moka caring for him and wanting another drink from his neck.
Moka then shortly arrives to save Tsukune and lands on the yeti. During the physical examinations, Kurumu somehow still manages to better her in their body measurements. Seeing how kindly Tsukune and his friends treat each other, Rubi starts to have doubts that drive her to later sneak out that night back to Oyakata. The next day Yukari declares that she now loves Tsukune just as much as she loves Moka. After Moka's inner self lands a stalwart kick on Kokoa, the latter runs to eagerly and lovingly greet the former. After the fanboys combine themselves, Tsukune removes the rosary from Moka's neck to awaken her inner self, which allows all the girls to take out the three fanboys. Tsukune tries to run away from the school but has a confrontation with Moka.
Tsukune removes the rosary on Moka's neck, and Moka's inner self easily repels the assault, tying Keito and her minions up in their own spiderweb. The four pieces are performed by , the voice actress for Moka Akashiya in the series. However, this draws the attention of Ririko, who insists Tsukune be given extra lessons with her instead. After breakfast, Kurumu, Mizore, and Yukari walk and talk about the shrines and notice that Tsukune and Moka are missing. Moka's inner self emerges and, due to being weakened by the water, instead tricks Tamao into leaping out of the water so she can give her a good kick. Throughout the day, the other girls have a hard time getting used to Moka's inner self, while Tsukune cannot help but to have Moka's outer self on his mind.
As his body goes limp, he removes the rosary from Moka's neck. His cousin later visits in the midst of the chaos and arranges a meeting which only worsens the situation. She then kisses him, being the first to do so, much to the chagrin of the others. Later, Rubi and academy headmaster discuss about the barrier that separates the two worlds. Tsukune is mistakenly give the credit for beating Kuyo, something no human could have possibly done, and is allowed to stay at the academy with everybody believing he is a monster again.
Ginei finds that he cannot outrun or outwit Moka's inner self. The girls learn that Tsukune only wanted the bus driver to deliver the letters he wrote to his family and Moka had simply overreacted. Mizore is discouraged at first since curry is a hot food and because the other girls have already presented Tsukune with their curries. As Kurumu and Yukari work to illuminate the real culprit and clear Tsukune's name, Moka ponders who Tsukune truly is in her heart. While trying to hide his human identity, he meets other girls who take a romantic interest in him.
Rubi tries to attack Tsukune with plant monsters, but Yukari slices them to pieces. After returning to her childlike state, Yukari decides that she will grow up naturally and asks Tsukune to wait until then. Moka's inner self defeats the yeti, which eventually turns out to be Mizore's costumed father. Kotaro successfully hypnotizes the entire female student body, unbelievably including Gin. However, after Tsukune removes the rosary from Moka's neck, Moka's inner self and the other girls swiftly defeat Mako, which all of this is unseen to Yukari.
Moka, Kurumu, and Mizore are also arrested for knowing Tsukune was a human. Although Moka's inner self prepares to inject her blood into Tsukune, Kuyo returns in the form of a and quickly dispatches all attempts to be defeated by the rest of the group. As Kurumu and Yukari hold off the mermaids, Tsukune swims to the bottom of the pool and removes the rosary on Moka's neck. After Ririko attacks Moka, the latter's notes splatter onto the floor, which brings Tsukune back to his senses. Inner Moka then reprimands Tsukune for not understanding Outer Moka and for making her cry.
Although managing to take cover in a cave, Tsukune and Kokoa are closed in due to a snowstorm and Kokoa begins to suffer from. An enraged Kurumu tries to kill him, but Moka arrives and saves him. Tsukune, who has tried everything to stop Kotaro, jumps up on stage and removes the rosary from Moka's neck. A fight with a delinquent student named quickly endangers Tsukune's life right before he accidentally removes the rosary on Moka's neck, which transforms Moka into a powerful vampire with silver hair that easily defeats Saizo. However, he discovers that Yokai is a school for monsters. Rubi covers the mirror with the wrapping, reverse its effects and returning the student body to their normal selves.
However, what Tsukune does not know is that Moka has , since water drains her vampire powers due to its purifying effects. With Ginei's help, Moka's inner self beats Kuyo unconscious. After Tsukune remarks that Moka is only using him for his blood, Kurumu seduces Tsukune by putting him in a trance, but Tsukune manages to break the spell. Yukari returns to Mako and asks her to increase her breast size. Moka later confronts Kokoa outside, yet unable to fight back and soon admitting defeat.
Kokoa quietly resolves to have her sister all to herself, as Tsukune carries an exhausted Moka to the infirmary. Moka and the others pay no attention to her as Kokoa tries to attack, but as Tsukune trips and fall, he removes the rosary from Moka's neck, and Moka's inner self kicks Kokoa away. Koka, after learning she can get her sister back, finds Tsukune and Moka, trying to remove the rosary from Moka's neck but fails to do so. Moka's inner self and Kokoa defeat Kotaro together, undoing the hypnotic spell on the entire female student body. Feeling left out by the others due to her young age, Yukari encounters later that night, pleasantly surprised to see another witch.