Yes, but he've too detachment with helping for people to be an F. I remind you that his fist motivation to became a teacher was not helping to young, but to fuck some high school bitches, and to be married at 45 with a girl of 15, (typical xSTP motivation in particular with E) then he become a real help for young, but he's less motivate by compassion than by principles like justice, honour, etc, and never take things too hearty although he's sometimes very enthusiast.
Moreover, in the anterior serie "shonan junaï gumi", one of the principal preocupation of teenage Ekichi is to lose virginity, and is ready to build and acomplish many diabolics plans to achieve it, with no considerations for peoples, that's definitely T.
Elsewhere, I think Fuyutsuki is her INFP dual and Ekichi represents an uncoventional teacher because he's xSTP, while the role of teacher is traditionaly given to xNFJs in popular culture. However, his role of teacher is a great opportunity to develop his tertiary function Fe.