"Tomoki Umino is a main character in the manga ""Devilish Romance."" He is a high school student attending Saint Maria Academy where he studies alongside his childhood friends, Ai and Sora. Tomoki is a popular student who is kind-hearted, smart, and athletic. He is also known for his charming personality, wavy brown hair, and bright green eyes.

Tomoki is a member of the school's soccer team and is their star striker. He has won many championships and awards for the team, and his talent has earned him the nickname ""The Ace."" Despite his popularity, Tomoki is a humble person who cares deeply for his friends.

Tomoki plays a crucial role in the plot of ""Devilish Romance"" when he accidentally summons a demon named Riria while practicing dark magic. Riria becomes obsessed with Tomoki and begins to pursue him relentlessly, causing chaos and turmoil in his life. Tomoki must work alongside Riria and other demons to uncover the truth behind his strange powers and stop a dark force from taking over the world.

Throughout the series, Tomoki shows bravery and determination in the face of danger. He is also a good listener and offers guidance and support to those around him. Tomoki's relationships with Ai, Sora, and Riria all develop throughout the story. He is conflicted by his feelings towards Riria, who he initially sees as a threat, but eventually learns to trust and care for. Tomoki's loyalty to his friends never wavers, even in the face of danger.

In conclusion, Tomoki Umino is a well-rounded character who is beloved by readers of ""Devilish Romance."" His charm, talent, and loyalty make him a standout character in the manga. As the series progresses, readers see Tomoki's growth and development, as he learns to navigate the dangerous world of demons and dark magic."