In the beginning of the story, Kor lives with Sydan and has successfully progressed in his training to be given his grandfather's Soma. When Sydan is called away to deal with a case of the disease despir, Kor comes across Kohaku Hearts, who had just fled from the witch Incarose while searching with her brother, Hisui Hearts, for Sydan. Kor leads Kohaku to where his mother's, Kardia Meteor's, Soma is sealed while meeting up with Hisui, only to be attacked by Incarose. Sydan is fatally wounded in the effort to save them, while Kohaku collapses when Incarose infests her with xerom. Kor attempts to strike Incarose down in anger, drawing her attention to him while she retreats. Now with time to regroup, Kor uses his powers as a Somatic to perform a Spiria Link and enter Kohaku's Spiria Nexus, where he meets the emerald-haired Lithia Spodumene at Kohaku's Spiria Core.