"Basara Toujou is the main protagonist of the popular Japanese manga series ""Shinmai Maou no Keiyakusha,"" written and illustrated by Tetsuto Uesu. Basara is a high school student with a complicated family background that includes being the son of a demon lord.

Basara is the ultimate bad boy with a rebellious nature that often lands him in trouble. He initially comes across as cold and distant to others, but is actually fiercely protective of his friends and family. Later in the series, he also becomes a dependable leader and protector for his harem of beautiful girls.

Despite being a mere human, Basara possesses incredible strength and skills that are heightened by his demon heritage. He is a master in combat and is capable of taking on incredibly powerful opponents. Basara also possesses a rare ability known as Banishing Shift, which allows him to teleport through space and time.

Basara's relationships with the two demon girls, Mio and Maria, are complex but incredibly important to the story. Mio is the daughter of the demon king and is sought by many as a powerful bride. Basara was initially tasked with protecting Mio, but later falls in love with her. Maria, on the other hand, is a childhood friend of Basara who also holds romantic feelings for him.

As the series progresses, Basara becomes an even more complex and interesting character. He navigates the dual nature of his human and demon selves while also protecting his loved ones from those who seek to harm them. His loyalty and strength make him both a formidable opponent and a valuable ally.

In conclusion, Basara Toujou is a multifaceted character who plays a vital role in the ""Shinmai Maou no Keiyakusha"" series. His unique background, incredible strength, and loyalty to his friends make him a beloved character among fans of the manga."