When Aiku was young he wanted to become the best striker in the world but his coach and other adults tainted his dream. He lost the will to become the best striker in the world in time but decided wholeheartedly to become the best defender in the world. He promised himself though that if a “true striker” ever appears, he will support them. Aiku has been known to be a womanizer. He even assumes women would want to share him with eachother.