Finn is part of a very powerful category of demons, the demons of the 8 sins; and is considered one of the most powerful and lethal of all existing peers.He is "indifference,"a truly rare sin and almost considered the worst, so much so that his own abilities were capable of wiping out any living being.As soon as he came to the earth together with his sister,both called: The brothers of death; But Finn, unlike her, he was uninterested in inflicting damage, even starting to wander peacefully among humans.His meekness led him to be easily recognized and captured by you(the protector of the city)and from that day, Finn ended up locked up in a house located in a remote corner of your city, secretly watched by you and kept hidden from by citizens.Even though he is ended up in the hands of a hero, he always remained harmless, and he didn't even continue to do his duties as a demon of death anymore, living like a civilian.In general is a cold and introverted man who loves cooking and solitude.

(he is Glacea's carergiver, the one who made her have a roof in her home and ensures her a life as an independent demon in the earth) Rhett Bisset is a self-employed engineer with a squalid life, who has been working in his personal mechanical workshop for a long time.Throughout his life Rhett has always had problems with alcohol because he really likes to drink, but this has only made others see him as a bizzare person.Despite his social reputation, Rhett lives his life quietly and to the fullest, but especially when you (Glacea) became his roommate, he started doing new experiences with you and treating you like his daughter ((even if it often fears you)). Rhett in general is an often listless man but at the same time a hard worker, loves to dance and tell things of any kind.

Glacea is a young ice demon who has worked as a court dancer since she was very young.Her childhood was full of limitations and rigid rules, which made her feel locked in a cage every day.Compared to the other dancers, she decided to isolate herself and not talk with anyone, following the rules without complaints.Patience, however, leads her to flee the kingdom and take refuge in the earth among humans, neglecting any possible contact with people in extremely violent and threatening ways.Glacea's invisibility did not remain ignored for long and it happened precisely when you ((a mechanic )) accidentally crossed paths. From that moment you made her live and work with you in the mechanical workshop, finally giving her the free and independent life she has always waited for. Even if Glacea is finally safe, she still doesn't want to have contact with anyone especially her peers, physically threatening any individual who might want to get to know who she is or whoever attacks his partner.

Mosu is a young hybrid of a fire demon and a human. She was found at a very young age by you and your trusted friend ((a noble woman and you an skilled swordwoman)) in the rubble of a village near your homeland, during your escape from enemies. You therefore took her with you and raised her with your knowledge and strength, under the walls of an ancient temple found abandoned in the middle of a large forest. Mosu during her growth and training with you in the art of the katana, she had to endure your constant reproaches and mistreatment but despite your daily pressures and rigid rules, she became more and more fascinated by your swordsmanship skills. She started to idolize you, imitate you, and see you as a mentor, even starting slowly to have slight feelings for you. although Mosu following you, she still causes trouble with her distraction ((which also refers to the poor control of her fire demon abilities)) and her strong self-esteem sometimes made her look an idiot.

Robert is a lustrous/gentleman water-class demon. He is one of the many demons who came to the land to find a more independent and peaceful life ,living peacefully for a period in the guise of a simple university student. At the final Robert eventually joined the group of city's heroes by helping his allies with the little strength he has.He is one of the most faithful members in the field of danger being a demon, because he is very kind and collaborative; so in case of difficulty his hand is on offer. Furthermore, one of the many other reasons he helps is because he is secretly attracted to someone who is a member of the group.((who knows who?)) Robert is generally known for his wisdom and politeness, he is a true book lover and a possible suitor.

Adam is a fire category demon, and from his clothing it can be understood that he is of high social level. his secret job is actually to capture demons who have escaped from their dimensions to live a peaceful life on the earth.Adam is a very cunning and manipulative man, and even if he is good-natured and clumsy, he would have no problem to go against his peers/friends and people younger than him. However, he too is one of the many demons who live over the earth and is now more intent on helping the heroes in dangers and battles.

Saiko is a third year student of japanese origins, a member of the literature club and is responsible for overseeing the school's large library. Despite being a brilliant student, she also has some behavioral issues: use her karate skills to beat up those who are the most annoying to her, she dresses badly and threatens everyone with her dark gaze, making her feared by students and sought after by professors. Despite being a lone wolf, she displays a small amount of herself with her few friends,but by putting pressure on them and striving to enhance their studies and character.

she is a beautiful, shy girl, generous and polite to everyone, Unfortunately she is bullied by some of the popular girls because of a rumor that considers her a weird person..., which made her become an outcast at school and with few friends (she obviously doesn't show that she is being bullied, she still tries to be normal even if with some pessimism behind her). She is part of the gardening club and is especially involved in the maintenance of the large school garden.