Eishiro Sugata

President of the New Continent Discovery Club. The person who created the opportunity for Tomoki to become Ikaros's master. Known as the wisdom bag of the members, Ikaros recognizes him as the "master's master."

He has the brains to easily solve math problems at the level of Tokyo University's graduate school and the (mysterious) combat ability rumored to be "the strongest middle school student." He is always calm and composed, often expressionless, and while Ikaros cannot laugh, he is considered a person who "does not laugh." Also, he is an extraordinary glutton, having won an eating contest by devouring dozens of huge curry servings as big as his own body. Despite his kindness in giving advice to those in trouble and rushing to help someone in a pinch, his overheated passion for discovering new continents and flying has made him considered a weirdo by those around him. Sometimes, instigated by Tomoki, he helps in acts like peeping, but each time he is caught by Mikako and punished.

He is estranged from his family and lives a self-sufficient tent life on the riverbank, occasionally engaging in fierce combat with a large bear, showing specialized survival skills. Also, he and Mikako have been childhood friends, and there have been several depictions suggesting feelings beyond that.

In the TV anime version, he narrates episodes about the discovery of new continents during the Age of Exploration at the beginning of each episode, playing a role in setting the direction of the episode's story.

In the manga "I Love You!! Magical Angel Cosmos" (serialized in Young Ace), set in the world six years after the original work, Eishiro, now a university student, appears. In this work, he is also aware of the ongoing anomalies and is pursuing their mysteries.