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His real name is Ilyusha, which is discovered by Teito and co. through the memories of Lem, his old friend. He is the grandson of the Krat family's leader and spent most of his time in his greenhouse. Lem and his younger sister, Lirin were orphans that the Krat household adopted. The three of them were close friends. Labrador (Ilyusha) had precognition ever since he was little, allowing him to 'see' where medicinal herbs would grow. Lirin was a sickly child, often falling sick until at one point, her illness could not be cured. Krat told Lem about 'The Flower of Eden'- a mystical flower that is said not only able to heal any illness, but also any sadness. Lem urges Ilyusha to tell him about the said flower. A few days later, a sealed letter filled with petals arrived. In it was written; "If you burn these petals as incense, Lirin would definitely be happy." Grateful, Lem hurried to Ilyusha's greenhouse, only to discover the imperial soldiers sealing the place off. Ilyusha was devoured by the forbidden flower- The Flower of Eden. Blinded by grief, Lem seals Ilyusha's body and Profe's seal together, calling it 'his most precious treasure in the world.'