>>283499671
The elf lied when he beheaded Morofuyu/Fubuki after Tokiyuki defeated him. He kept Fubuki's corpse and used elvish science to revive him and made him eat medicinal poop for 6 months to heal his injuries. Originally he wanted to keep Fubuki as another of his experimental soldiers, but ultimately let him join Tokiyuki during his final fight with Takauji.