I notice you're referencing Ookami-san wa Taberaretai (Vol. 3, “sin censura” / uncensored, “1 upd” possibly meaning first update or version). This is a manga/adult comic series.
In this finale, the protagonist Akazu denies his student Okami's feelings, leading to her skipping school. Akazu finds himself torn between his professional responsibilities as a teacher and his personal feelings. Total Episodes : 3. Genre : Romance, Ecchi, Sōryo-waku. ookamisan wa taberaretai 03 sin censura 1 upd