[Book Introduction] The author himself explains "English Grammar Polaris" (KADOKAWA) Masao Seki N...
33:59
【本紹介】『英単語 Stock』（文英堂）を著者本人が解説 関 正生 №140
22:08
Answering the questions I received recently about "Polaris English Grammar" (Part 1) Masao Seki N...
11:28
Introducing StudySapuri's Masao Seki [Junior High School, High School, Ronin, Keio University Days]
22:37
[Book Introduction] The author himself explains "Masaaki Seki's Final English Grammar Exercise Po...
19:29