We invite you to join our community to pioneer in the field of "second language acquisition." We welcome researchers, designers, academics, therapists, parents, and anyone who shares the vision to innovate, especially in the early years of development, with interdisciplinary approaches. We eagerly await the participation of those who want to contribute to innovations developed with interdisciplinary approaches during early development. We invite everyone who wants to join user researches and believes in the importance of early development to grow with us!