Shouta Magatsuchi

Shouta Magatsuchi (真ヶ土 翔太 Magado Shōta) is a young boy borne into a family of mages in the modern world.

Appearance
Shouta's 1st appearance is in Episode 6. Where Lucoa brought Kobayashi and Tohru to Shouta's house to solve the misunderstanding of Lucoa being the demon or Succubus...

Personality
Shouta is quite a shy person for most of the time being with Lucoa-san. As Lucoa trying to seduce him or being kinda erotic, he would run away with embarrassment and accuse Lucoa-san to be a demon. Still, sometimes he want to appear strong, but then it's just himself trying to hide his shyness.

Powers and Abilities
Born into a family of mages in the modern world, Shouta seems to have enough knowledge about setting up a ritual to summon a demon. Though actually Lucoa-san is the one who respond to that ritual.

Lucoa
The ex-Goddess that now lives with Shota. He summoned her using a dark ritual passed down in his family of mages that was supposed to contract a demon to him. Even though Lucoa is the exact opposite, being a ex-Goddess, Shota believes she is a succubus because of her seductive antics.

Kobayashi
As one of his father's employees, he is sometimes left under her care though this likely has more to do with Kobayashi's association with Lucoa rather than having anything to do with work.

Kanna Kamui and Riko Saikawa
Aside from attending the same elementary school and having shared acquaintances, not much interaction is shown between them. In episode 10, Shouta is briefly seen handing out steamed buns to the two.