Heartwarming / Muteki Kanban Musume

  • It doesn't matter that Kayahara Sensei's depression ruins all her efforts to help her students, she really wanted to help Megumi when she told her that she has a Friendless Background. Kayahara Sensei endured all the abuse Megumi gave her and even sacrificed her precious resign letter in a try to befriend her. She even smiled a little, the only instance she smiled where there was no Trademark Favorite Food involved.
http://tvtropes.org/pmwiki/pmwiki.php/Heartwarming/MutekiKanbanMusume