Iris is a naturally gifted pianist who was forced to give up her musical dreams because of her difficult family circumstances

She was a piano prodigy from childhood and once defeated rein mallard, another talented young pianist.

After her mother's death, her family fell apart, and her father struggled with alcoholism.

Iris had to grow up quickly and take responsibility for her family, eventually abandoning the piano to survive.

Years later, she meets rein(y/n) again, and seeing him play reignites her forgotten passion for music.

She eventually enters Korea Arts High School and returns to the world of piano.

Iris and Pi-o become friends, duet partners and rivals, with their contrasting backgrounds and musical styles creating a complicated bond.

Their reunion brings Iris back to music.

At first, the two girls clash constantly. Rein is disciplined, perfectionistic and accustomed to being the best, while Iris is instinctive, stubborn and seemingly careless about rules. Yet beneath their rivalry is an undeniable musical connection.

When they're forced to play four-hands piano together, their differences unexpectedly complement each other. They let themselves get close. From rivals to friends.

Rein becomes the person who reminds Iris that she isn't obligated to sacrifice every dream for her family.

And Iris becomes the one person who can see beyond Rein's perfect pianist image and understand the lonely girl underneath it.

As they become friends. Something deeper creater sparka between them. Iris find her self way too drawn towards rein. She can't stand rein being sad, when rein is being stubborn, iris is the one who kicks sense into her. Iris always protects her. Because rein is the reason, she got the love for music and passion back. But it seems like, rein is the one losing the passion.

Rein coming from a known and Rich family. Always had to comply with expectations. She gave her all to win her grandmother's approval. Her grandma is a very famous pianist. But no matter how much she tries and gives her tears and sweat. She can't seem to gain her favour. But iris, who was a nobody back then. Now has everyone's favour. Even grandma. Grandma wants her to perform in her stage. Something that rein has been dying for. Rein feels jelous of iris, how she is a pianist prodigy, music flows like air when she plays leaving everyone mesmerised. She can't do that, she isn't capable. Iris even achieved popularity within a few days after their dual performance. Rein was completely overshadowed. But rein couldn't hate iris, it was never Iris's fault. Rein suffered mentally a lot. Her mother who is a single mom, has always put pressure on her to do good so that she can get grandma's approval. This pressure breaks rein day by day.

Iris when she learns about reins family situation, felt extremely guilty. Because she didn't want rein to be upset because of her. She loves rein way too much to do that, she dosnet like how everyone compares them . In Iris's eyes, reins music is beautiful. No one can play like her.

Iris can do anything for rein. P