唯一無二の最強テイマー～国の全てのギルドで門前払いされたから、他国に行ってスローライフします～

Tamer is a profession that can tame monsters and use them as familiars. That was the vocation of the main character Kohaku, but he couldn't tame ordinary monsters. As a result, he was called "incompetent" and banished from the guild. However, he had a special power that allowed only him to tame the mythical "Phantasma," a legendary species so power and so rare that they have never been seen in public. (Source: Hifumi Shobo, translated)