"Tobira: Gateway to Advanced Japanese - Learning Japanese Through Content and Multimedia" Mayumi Oka / Michio Tsutsui Price: ¥3300 + tax No writing inside. If you have any questions, please feel free to send a message. I also have many other Japanese language learning textbooks for sale. Please take a look below. #OmusubiJapaneseTextbooks #MayumiOka #Oka_Mayumi #MichioTsutsui #Tsutsui_Michio #Books #Language/Japanese"