네쌍둥이 데이즈 3 : 소문의 시작은 편지!

[DeepL Translation - needs review] I have one, two...... three kids that look just like me!

We have to live in the same house from today?

With over 2 million copies sold, the story of Japan's favorite quadruplets is finally available in Korea. Published since 2018, Quadruplets Days is an instant bestselling series that ranked first in the children's paperback category of the 2024 Japanese Children's Book General Election. The secret to its popularity lies in the story's protagonists,...