Some 12 years past, Corticarte Apa Lagranges is being chased by a number of other spirits. As she tries to get away from them, a young Phoron sits on the roof of his orphanage singing to himself. Corticarte hears his song and is entranced by it, and by extension the singer. She flies to the source of the song and finds Phoron. Corticarte reveals herself and that she wants him all for herself because of his pure heart and asks if he will sing only for her. She tries to make a contract with him, but is interrupted by the spirits that were chasing her. Back in the present, Phoron is cleaning the canteen of the Dantist Academy, to pay his tuition. Dantists are people who summon spirit through music and Phoron decided to be a Dantist after he met Corticarte. However, even though he has trained and was able to entrance a spirit as a child, he is unable summon any spirits. His latest attempt to play an Commandia fails, but as he leaves, dejected, he recalls Corticarte complimenting his singing as a child. He then decides to sing the same song he sang the night that Corticarte appeared in front of him. As he sings an unknown man removes the seal from a room in which a dark spirit has been imprisoned. On hearing the song, the dark spirit destroys everything that gets in its way looking for the source of the song. Eufinly tries to stop it, but her spirit is overpowered. As Phoron calls out Eufinly's name the dark spirit stops its rampage and approaches him. The spirit sloughs off its dark shell revealing a little girl with red hair - Corticarte, in the form of a child. Phoron doesn't recognize her as Corticarte until she actually tells him, partly because of her child-like appearance and also because he thought that their previous encounter was a dream. Corticarte berates Phoron and then completes her contract with him, which was previously interrupted, with a kiss.

Phoron has a Commandia performance the following day and is deeply worried by Corticarte. During the performance students in the audience make remarks about him and his poor music causing Corticate to lose her temper. Phoron uses his Divine song to try to calm her but it is so poorly done that it actually angers her and she leaves Phoron for several days. Feeling lost without her, Phoron encounters the Headmaster who gives him some friendly advice.

After getting made fun of my Danguis and becoming unable to summon any spirits, Phoron is scolded by Prine for only wanting to be respected as a dantist and not actually putting his heart into his commandia. Phoron listens to Perse who plays her commandia for him to listen, and comes to a realization. He comes up with a new Commandia which he plans to try out in private but he encounters Renbart, who asks if he can sit in. Phoron agrees and Renbart pulls a fast one on him, ushering Prine and Perse into the hall along with him. Resigned to an expanded audience, Phoron plays his new Commandia which is so beguiling that not only is he able to call forth lesser two-winged spirits, which he has never been able to do before, but he also summons a number of mid-level four-winged spirits, which very few Dantists with his level of experience can do. Corti also hears the song and returns to Phoron, though she takes objection to Renbart suggesting that if Phoron makes covenants with all of the four-winged spirits that appeared he would be a Dantist to be reckoned with.