LoveGreen, who goes by the handle LG, is a vampire and a devoted follower of Midori Kohakobe in the series. His real name is never revealed, and he only introduces himself by his online alias. He is a hikikomori otaku who first met Midori at a game gathering around twenty years before the main events of the story. In terms of appearance, LG is overweight and wears round glasses that often reflect light in a manner typical of an otaku stereotype, along with a headband and short hair.

His personality is defined by extreme loyalty to Midori, whom he serves as an underling. He provides her with vast amounts of information and support, acting as a reliable source of intel. His motivations revolve around this allegiance, and he takes pride in his role. He behaves with the enthusiastic energy of a devoted fan, often using otaku mannerisms.

Within the story, LG appears primarily in the second season, where he aids Midori in her affairs and interacts with the main cast. His relationship with Midori is his most significant; he is completely devoted to her and follows her orders without question. Beyond this, he has limited direct interactions with other characters, though his presence adds to the background of the vampire underworld.

He develops little over the course of the narrative, remaining a consistently loyal assistant to Midori. Notable abilities include the standard supernatural traits of vampires in the series, such as agelessness, regeneration, and heightened senses. Despite being a vampire who requires only blood for sustenance, his persistent eating habits keep him overweight, a rarity among his kind.