Ronald is a recurring character in Kyuuketsuki Sugu Shinu, known as a vampire hunter and one of Draluc's most frequent associates. He is a serious, hardworking, and often exasperated young man who gets dragged into absurd situations while trying to handle vampire-related incidents. Ronald plays an important supporting role in the series, balancing the comedy with his straight-faced reactions and helping drive the story through his interactions with Draluc and other eccentric characters.