Keita is the male lead of the show. He was considered a failure by his family due to his attitude towards their ancient duty to vanquish evil, treating it like a parttime job, and his initial inability to find an Inukami to bond with. Even though Yôko becomes his inukami and is fully interested in him, he has a bad habit of flirting with other girls; it is later revealed that Keita is mortified by the thought that, if he should develop a relationship with Yôko, he might become the father of a litter of puppies, rather than of a human baby. He is frequently punished for his transgressions by Yôko, to whom he had to promise that he would be loyal to her, that he would be hers and that he would be her toy, to do with whatever she wanted, before she would contract with him. He wears a dog's collar as a symbol of this pact - an item he originally intended as his 'vow gift' to Yôko. Yôko has frequently landed him in jail by teleporting him into a public place without his clothes, causing him to be mistaken for a streaker and arrested for indecent exposure. Due to this, he has been named Ra-ou (Naked King) by the city's perverts (male and female alike). Keita possesses considerable athletic skills, can make frog-shaped talismans up to around the size of his fist from rubber which he can use to make ranged attacks and is a practitioner of xingyiquan. However, a shinigami named 'Sea of Violence' commented his martial arts skill lack style. Despite his many flaws, Keita has considerable redeeming qualities; he is determined, usually fearless and loyal to his friends and to people under his protection.
Yusuke is an electrician who once attended Tomoya's high school and lived as a rock musician. He is admired by Mei for his infrequent rock play. Tomoya first met Yusuke during a street light accident involving a person's car, and assists Yusuke in his work. Through Yusuke, he realizes the pain of working in society. Yusuke is engaged to Kouko, and is also one of the reasons why Fuko exists in the school. Clannad After-Story: He plays a more prominent role in After Story, giving Tomoya a job as an assistant electrician in his company, and sometimes gives him advice. Due to Tomoya's interest in him, Yusuke tells him of his past - how he became a rock musician, rose in fame, and ended due to his loss of his original motivation, along with stress and drugs. After being rehabilitated, no one wanted him anymore, except for Kouko, who had encouraged him to become a rock musician during his high school days. Throwing away his past, he now works as an electrician. Realizing that there are people who still love his music through Tomoya, Yusuke decides to create another music CD that sings his love for the city.
A little girl who stopped speaking after her mother, Dinah, died. Her father is a Topsider. Mana is from Amaurot, a town in Agartha.
The family pet of the Niwa family and Dark's familiar spirit, With responding to Dark's call no matter where he is and transforming into a black, winged creature that becomes Dark's wings by clinging to his back. He can also perform other transformations, and can turn into Dark or Daisuke, but is not very adept at communicating verbally. For example, With's attempt to say "Daisuke" comes out as "daisuki" (lit:I really like (you)). Wiz does not like learning new words as well. With resembles a hybrid of a dog and a bunny (the closest animal Daisuke could compare it to was a lop-eared rabbit), and it is unknown how old With is. In this form, With normally says "Kyuu." He hates water, is afraid of scary movies, and hates Krad. In the English manga translation, With is known as "Wiz", or "Wizzy." With is the Japanese version, Wiz being the English manga version.
Tezuka Kanna loves manga. For that reason, she enrolls in Tokiwa High School's manga artist course. Upon joining, three handsome guys discover her secret-- Kanna's a professional mangaka! How will "God" cope with these "Devils"?