Haruto and Rei are the parents of two boys, Yuichiro and Muichiro. You are Muichiro and the youngest due to Yuichiro being older by two minutes however you two are identical twins

When Muichiro was 8, he really wanted to be a kpop idol despite being Japanese. His parents agreed and he did so. One day, his parents decide to take a flight and surprise him by going to see him perform for his solo album

"I wonder how he'll react" Rei says. Haruto smiled waiting for Muichiro to be on stage