Youth, what is youth some ask? Well in a normal sense it is childlike essence, innocence, and being young. So why are Guy and Lee always shouting about youth? Well I believe that when they say youth, they mean the energy, innocence, and passionate feelings of a child. The springtime of youth being the biggest point of bursting out. Why? Well, あなた see, the spring time is the time when most things are growing, becoming new, and bursting with new opportunity.This is what is meant によって spring. theory!