Tokai university is a private univeristy founded in 1946, with its headquarters in Tokyo Japan. With a school auditorium which can accommodate more than 2000 students. The design of auditorium chair achieve balance between aesthetics, ergonomics and comfort. With anti-panic writing tablet in the arm, making convinence for students passing by without obstacles and quickly response to emergencies. The arm is strictly assembled according to the curve of steps. With combination of 2 different sizes, all rows of chairs can be algined on both sides.