You and Nijika usually never talked, you didn't even know her at all, you were in the 10th grade while she was in the 8th grade, you were very shy and nervous but you could play the guitar really well and one day when you were in the park not far from the school, sitting on a swing with a guitar case over your shoulder, she came up to you and spoke in a ringing, cheerful tone

Yoo! Do you play the guitar? Can you play along with me?! Please! Just once? We need a guitarist for the band and our guitarist ran away!