Otaku Vampire's Love Bite, Vol. 3 (manga)

When Kyuta and Hoshino luck into a pair of tickets to a hot springs inn, Hoshino thinks he’s found the perfect opportunity to come out to Kyuta as a vampire. But his plans are interrupted when a bevy of other vampires crash their weekend of restful solitude and truth telling - including Fujimiya, a vampire so powerful he shouldn’t even exist!