Masayuki Haitani is a supporting character in Love Hina. He is a second-year ronin, meaning a student who has not yet passed the university entrance exam, and attends the Sasagi seminar preparatory school alongside the protagonist, Keitaro Urashima. Haitani is the taller of Keitaro’s two close friends from the cram school, the other being Kimiaki Shirai. Apart from his height, he is very similar to Shirai in both appearance and behavior. He is a playboy at heart, often seen chasing after cute girls and spending his free time with Shirai. His general demeanor is carefree, lighthearted, and humorous, and he frequently provides comic relief in the series. Despite his flirtatious and sometimes irresponsible attitude, he is a loyal friend who supports Keitaro in his studies and personal life. He is among the few external friends who interact with the residents of Hinata Inn, though his role remains primarily that of a side character who appears to encourage Keitaro or join in his misadventures. Haitani ends up entering a university before either Keitaro or Shirai, marking a subtle development in his academic path. He does not undergo a major character arc, but his consistent presence reinforces the theme of friendship outside the inn. His notable abilities are not extraordinary; he is portrayed as an average student with a talent for socializing rather than academics or combat.