Kurenai no Assassin  

Assassin of Crimson, Kurenai no Ansatsusha, 紅の暗殺者〈アサシン〉

Humans with exceptional skills are called assassins, who use their abilities to kill people. among them is the most dangerous one, known as the assassin of crimson, who was once the leader of the yuuyami guild and killed king mars. this has led the country's princess to declare that whoever captures her will receive a fortune and become her husband, essentially becoming the next king. virgil is a person with red hair who resembles a girl. he travels with a performing troupe while searching for his twin brother serge. his unique features match those of the assassin of crimson, leading him to uncover the mystery behind king mars' death and the identity of the assassin of crimson.