ハルスケル raw 第01-02巻 [Haru Su Keru vol 01-02]

High school teacher Haruo Nemoto is disliked at school for being boring and taciturn. However, deep down, he's a man of justice who cares more about his students than anyone else and wishes for their youth to shine. And he has a secret ability, when his "manhood" rises, he becomes invisible. Using this power he unexpectedly gained, he rises up again today to protect the students' spring!