Spoiler****
Why the fuck don't they just give each other half. Like Caire can give her half of his immortality and they can both live relatively the same amount of time as like damphiers
(〜￣△￣)〜
He would continue to be thirty and attack her
Chapter 40 has a graphic sicky scene so just so you know. It made me very uncomfortable as someone with emetophobia so preceed with caution ╥﹏╥