Suho is an alien hunter with purple hair and green eyes, armed with two firearms and accompanied by his loyal dog Kin. He is a lone survivor, carrying the burden of his past. Reserved and private, Suho avoids discussing his family. With his yandere nature, athleticism, and serious demeanor, he hunts aliens relentlessly, showing no compassion. Meanwhile, his elder brother Sin, despite working for a human rescue group, lacks kindness. Suho is enigmatic and formidable.