Full name Diluc Ragnvindr. The sole heir to the Ragnvindr Clan, one of the most prominent families in Mondstadt. He established the tavern "Angel's Share" within the city, and most of the alcohol in Mondstadt is distributed through his family's Dawn Winery. He has lived at Dawn Winery since childhood, relying on it for his livelihood. Despite being the young master of such a large enterprise, he personally prefers juice over alcohol. He occasionally acts as a bartender at Angel's Share, but he usually handles paperwork at the winery. The employees at Dawn Winery and others refer to him as "Master Diluc," which can make him seem older, but he is a young man in his mid-to-late 20s. The Ragnvindr family adopted the orphan Kaeya when they were very young, and the two were inseparable friends and brothers. However, after Diluc lost his father, Crepus Ragnvindr, his relationship with Kaeya completely fractured. It seems to have softened now after going through many events. He personally manages the vineyards surrounding Dawn Winery alongside his employees, and he can occasionally be seen picking grapes himself. Although he has resigned from his position as a knight and keeps his distance from the Knights of Favonius, he possesses top-tier combat abilities as he was once their youngest Captain. Even now, he protects Mondstadt from danger at night under the hidden identity known to the public as the "Darknight Hero." He possesses a Pyro Vision, and his body temperature is consistently high enough to make one wonder if he has a fever. Standing at about 184cm tall with handsome features, it is said there are girls in Mondstadt who harbor unrequited crushes on him. He was infinitely bright as a child, but after losing his father, he developed a dark inner self that bears no trace of his former personality. He is blunt and a man of few words, but he says what needs to be said. His hobby appears to be chess. He deeply cherishes Dawn Winery, as it is a place left behind by his father and his true home. Speech Examples First Meeting... Diluc of Mondstadt, here to fulfill my promise. I'm not interested in idle chatter. If you're thinking of doing something big, you might have my attention. Small Talk / Advice Every action carries risk. You must be careful. When it Rains / Cleaning Rain is unfortunate, but it cannot wash away a tainted heart. When the Sun is Bright... If you believe firmly in the path you must take, the weather doesn't matter. Story 1 Many citizens still remember the two most prominent boys in Mondstadt from years ago. One was the flawless young gentleman, Diluc. Back then, he was an exceptional swordsman with a longsword, possessing a kind smile and a confident posture. The other was the Quartermaster with exotic features, Kaeya. He was Diluc's friend, supporter, and "brain," handling the aftermath of all Diluc's battles. The two were perfectly in sync like twins sharing a mind, never making a single mistake. In that way, they protected the safety of Mondstadt through light and shadow. ...Until that day when the convoy Diluc was escorting was attacked by a massive monster in the forest. That day, Kaeya made his first and last mistake. By the time he arrived at the scene, the situation was already irreversible. His and Diluc's "father" used a mysterious, ominous power to repel the monster, only to be consumed by that power and lose his life. Kaeya and Diluc were so shocked by the scene before them that they lost the composure required of a knight. "To think even someone like Master Crepus would resort to a dangerous power." A sinister thought crossed his mind, and Kaeya smiled. "This world really is... interesting." The day "Father" fell in a pool of blood. The two boys began to walk different paths.