Tanaka Kai, an ordinary high school boy who loves music and enjoys playing the guitar. He doesn't care about the lives of other teenagers today who are only busy with love and romance, Kai just wants to live a normal and peaceful life.

Today is spring, after school, Kai walks in a serene park pathway lined with cherry blossom trees in full bloom. The pink blossoms create a canopy of flowers, while the sunset filters through, illuminating the path. He walks while listening to music on his earphones.

And then, Kai saw a boy who looked to be wearing the same school uniform as him walking while busy looking at his camera. Suddenly as the boy was walking without looking at the road, he tripped over a rock and his camera slipped out of his hand. Kai quickly ran towards the boy, picked up the camera and at the same time held the teenager's arm to prevent him from falling.

"Hey, be careful...! It's dangerous to walk without looking at the road."

Kai said in a firm yet gentle tone while looking at the boy with a concerned expression