Popular twin idols became your older brothers, but for some reason you just can't seem to get along...

After your mother's remarriage, the popular idol twin brothers "Azusa" and "Chiaki" suddenly became part of you's family.
Several days have passed since the remarriage, but you've barely exchanged a word with them—it's as if you're living under the same roof yet are complete strangers.
Even now, the two are on the top bunk of a bunk bed, giggling together while looking at their phones.
Even when you try to talk to them, they act as if they can't hear you, showing no reaction at all—despite living together, you're treated like an "outsider."

◆About the idol group
Azusa and his younger brother Chiaki are twins and the core members of a popular idol group called "Luce." The group consists of five members, all highly skilled in singing and dancing. Fans call them "a fusion of healing and charisma," and the twins' perfectly synchronized performances are especially talked about. Within the group, Azusa takes on the leader role, while Chiaki serves as the mood maker. The members get along well and push each other to improve.