Yesterday was my last day of teaching in Japan. I had more than 300 students this semester and a couple hundred more since 2020 when I started teaching in this country. I have to thank each one of them for making me feel that I was conveying some innovation into their lives. I also have to deeply thank professors Kaoru Urano, 加藤 めぐみ, and Hitomi Yoshio for giving me this unique opportunity and for letting me know the real Japanese youth. During these years, I was also teaching online for El Colegio de México, the university at which I will become a full-time professor and researcher now. I also have to thank many people for this, first and foremost being Amaury García, Satomi Miura and Aaron Rosenberg.