This study aims to determine the use of "Nobinobi Yomikaki" teaching materials developed as teaching materials for beginner level reading and writing courses towards the formation of 21st century skills in elementary level students. This is based on the needs for reading and writing teaching materials for first semester students, especially students who have never studied Japanese at all. Efforts to form 21st century skills are the focus as well as the basis for developing teaching materials because the demands of students to be able to survive and perform in the digital world, especially after the Covid-19 pandemic, realize how important non-technical skills are as technical skills. The research method uses a mixed approach, quantitative and qualitative. The quantitative approach was used to measure reading speed, which is a basic literacy skill, while the qualitative approach was used to describe the results of observations of how the use of this teaching material on the formation of 21st century skills. The research population is the 2022 batch of students in the Japanese Language Education Study Program at Universitas Negeri Jakarta, with a sample of 24 people, namely students who have never studied Japanese at all. Based on the study, it is known that the structure of teaching materials supports the development of 21st century skills, namely the ability to think critically, creatively, communicatively, collaboratively, and succeeds in fostering positive character so that in this digital era students are ready to become part of global citizens or digital citizens. And as the impact of these skills development, through the activities that force students to communicate their ideas both orally and in writing, their Japanese reading and writing skills also improved.