Ch 1 - Evil Plot

Diluc, a man everyone adores, but his seriousness makes people think badly of him

No one has ever seen him smile, not even his adoptive brother, Kaeya

One night, as Diluc hears that the Abyss Order was planning an attack in Mondstadt, he leaves the tavern to solve the problem himself, but it seems the Abyss had a trick for the Darknight Hero

They had tricked him, and changed his life forever, only to find that to break the curse, he must do the one thing he'd do last

Seek his brother's help