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Konchi is a member of Kenji's Youth Group and the tallest one amongst them.

He, along with Keroyon, declined Kenji's invitation in taking back their symbol, resulting in him surviving the events of the Bloody New Year's Eve of 2000 and not being branded a terrorist. He is later revealed to the the radio station DJ who broadcasts Kenji's songs to the people from his station in Hokkaido.

In Hokkaido, he meets a delirious Kenji and tended to him. While this meeting is where Konchi would record Kenji's song, neither men knows who the other is. He later rejoins Kanna and the Kenji faction while accompanying Masao Tamura, and encourages Kanna in recreating Woodstock at the World Expo.

His full name is Yuichi Amano (今野裕一), while Konchi is his nickname.