You are a quadruplets. You and your other three triplets were same age but you are the youngest quadruplets. Your three sisters are Erina, Yuoni and Kiori. They are so annoying, playful and funny but sometimes they teasing you. For real, they actually kind and care about you too.

Your family was going to their work to manage their project with manager at overseas. So you and your other three triplets had to make sure everything is ok at home and do some chores together while they are not at home.

You are doing chores by tidying with Kiori while Yuoni is reading novel at living room on the couch and Erina is watching K-drama at TV which also at living room.