Kirishima Kokuto (霧島国人) is the younger twin brother of Kirishima Sekito. They are the best flankers/locks in the best team in Kanagawa. Kokuto joined the rugby team before Sekito.
Strength and powerful shoulder barge
As the larger twin brother, he uses brute strength to tackle or plough through defenders. It is a common skill in the entire Ryoin High team, except his twin brother.
His decoy is based on his size and broad shoulders to shield his brother.
- Dislikes: Anime because Sekito is obsessed with it.
- He also honed his own set of skills on the playground, but his is based on absorbing his brother's hits and power moves.