The Yotsuya Campus of Obirin University, completed in 2008, is a contemporary academic facility located in Tokyo's Shinjuku ward. Designed by architect Kunihiko Hayakawa, this structure exemplifies modern educational architecture that seamlessly integrates with its urban environment. The building serves as home to both Obirin University and the Nichibei Kaiwa Gakuin language institute, creating a dynamic hub for international education and cultural exchange. Its thoughtful design balances functional classroom spaces with innovative learning environments, reflecting contemporary approaches to higher education infrastructure. The campus represents a significant addition to the Yotsuya district's architectural landscape, demonstrating how institutional buildings can contribute meaningfully to urban development.