Tada Ichinodake no Eien
Eternally Only Once·ただ一度だけの永遠
A vampire named Kentaro nearly gets consumed by Otsuka, a seiki-sucker, but survives due to his immortality. They decide to live together, sustaining each other through blood and seiki. Over time, their relationship evolves beyond mere sustenance. In another storyline, Takigawa harbors resentment toward Mura, who loves him despite having raped him in the past.