Go
The go radical and the go kanji are exactly the same!
こう, ぎょう
い, おこな, ゆ
None
"Oh, did he go again?" When こういち is not around, that's what people often say because he goes to the gyoza (ぎょう) restaurant almost every day. こういち just loves gyoza so much, you always know where he is when he is not home.