Polyphonica

Corticarte Apa Lagranges is being chased by other spirits, as she try to get away from them, young Phoron is singing alone on the top of the roof. Corticarte heard his singing and is healed by it, she fly to see who is singing it and finds Phoron. Corticarte reveals she wants him all for herself because of his pure heart and ask if he could sing only for her. Corticarte try to make a contract with him, but is interrupted by the spirits that were chasing her. We are back in the present and Phoron is cleaning the canteen of the university. Dantist are people who summon spirit through music, Phoron decided to be a Dantist after he met Corticarte, but being a Dantist, he cannot summon any spirit. Phoron try one more time to summon spirit through his One-Man Orchestra piano, but is unable to. He puts down the One-Man Orchestra, and remembers Corticarte saying "Nice song". He decided then to sing the same song he sanged that night Corticarte appeared in front of him.

Phoron has a commandia performance tomorrow and is deeply worried by Corticate. During the performance students made remarks towards him causing Corticate to lose it. Phoron uses Divine song to calm her but actually angers her.

Phoron feels Coaticarte's absence intensely and begins to lose hope. Coaticarte finally gets her nickname, and it is hinted that it may be up to Phoron to save the world.

The Academy gets an important visitor named Raika, and Yufi's first instincts appear to be correct. Raika discovers Coatie's presence at the school, which is valuable information for the Strangers of Lament.

Phoron receives a love note, which may be a trap, and it turns out that Coatie once had another name: The Crimson Princess of Destruction.

Danguise recovers. Peruce reveals her past and why Prine is weak. Later, Prine reveals that there is more to her than anyone expected, and it causes Peruce to question everything about her life to this point.

Lord Bolzon, Raika, and the rest of the Strangers of Lament meet and reassess their sinister plan. Phoron begins to realize that he knows nothing about Coatie's past.

The Strangers of Lament take Pire, Peruce, and Rembalt hostage, and it is discovered that the Principal is really one of the Four Great Composers. Yufi steps in to battle the strangers. Later, they use Phoron's emotions as a weapon.

The Instruments of Creation are all obtained by the Strangers of Lament. Coatie knows what is going to happen and reveals the intentions of the Strangers. Phoron is ordered to use Coatie as a weapon.

With an intense battle looming, Coatie's only fear is that Phoron will leave her if he knows the whole truth about her past. Coatie knows where to find the Score, but she does not want to say it.

The location of the Score is revealed. On the oil rig, the fights rage. Coatie's only regret about prospective defeat is not being able to see Phoron again.