Yagi to Ookami no Hatsujou Jijou

On the twin planet of Serian, where beast-human hybrids coexist, two young men find themselves locked in a bitter rivalry. Yagi, sharp-tongued and dangerously unpredictable, harbors a sadistic streak that emerges alongside a dual personality. His counterpart, Okami, is equally stubborn and fiercely independent—a delinquent known for his unyielding pride. Despite a history of closeness, their relationship has soured into constant bickering, and now, as high school students assigned to a joint infiltration mission on Earth, they can barely stand to be in the same room. Their assignment comes with strict protocols: daily human-shifting medication and suppressants to control their primal instincts. But three days into the mission, something goes wrong. Yagi's mating period arrives with alarming symptoms that defy the medication's effects. Concerned despite their animosity, Okami attempts to check on his former friend, only to find himself pulled into a dangerous confrontation. When Yagi's instincts take over and he sinks his teeth into Okami's nape—the most intimate and binding gesture of their kind—the lines between hatred, worry, and something far more primal begin to blur. Trapped on an unfamiliar planet with their carefully maintained control crumbling, both must navigate the consequences of a bond neither of them anticipated.