Available for individual sale. These were published in 2020 and 2019. Kokan Dokkai Point Kakunin Jiten (Classical Chinese Reading Comprehension Point Confirmation Dictionary) Komatta Toki no Kokan Bunpo Kakunin Jiten (Classical Chinese Grammar Confirmation Dictionary for When You're Stuck) Suugaku Kaihou Kakunin Jiten Suugaku I (Mathematics Solution Confirmation Dictionary Mathematics I) Komatta Toki no Suugaku Kaihou A Teiri Hoshiki Kakunin BOOK (Mathematics Solution A Theorem Method Confirmation BOOK for When You're Stuck) Eibunpou Kakunin Jiten (English Grammar Confirmation Dictionary) #Shinken Zemi (Benesse)