[Diluc/Kaeya HPpa] May the Stars Wish the Flames Never Die Out

[Yu Xiao] May That Star's Flame Never Go Out

I'm trying to write a sweet HP fanfic, though it might be far more out of character than it is sweet.

Warning: confusing narration

Two people who are both immature and mature

An ambiguous phase, more than brothers but not quite lovers

A story sparked by a birthday present from the future

Kai, a fifteen-year-old Ravenclaw x Di, a seventeen-year-old Gryffindor

Summary:

Back then, nothing had happened yet.

He clutched the flame in his hand and made a promise to a shooting star, without permission, that it would never go out.

Theme: We will be together forever.