Can an Unknown Person Make It into the Book of Friends?

[Naturally airheaded heartthrob + Natsume friendship-focused + two male leads + no romance in the main story + we're all good friends + becomes frail later on]

[OOC warning!!!!]

Abe no Seimei + Matoba Seiji + Natori Shuichi × Atobe Harushi

[Harushi won't officially end up with anyone in the main story. That only happens in the extras. There might be intimate moments in the main story, but they won't get together (yes, that's how it is).]

*

Atobe Harushi wandered for a long time before finally finding a place to settle down in one world.

He made many friends here, but... why were they all worried he might suddenly die?

He's a god. He won't die that easily.

What? You're asking what he'll do if the Book of Friends is gone?

It's fine. He doesn't have a true name, so he can't be entered in the Book of Friends.

His friends: That's exactly what we're worried about!!

*

Humans and yokai must not form bonds, lest they only bring each other sorrow.