Kouta Ohnishi

Kouta Ohnishi was a Hufflepuff student at Hogwarts School of Witchcraft and Wizardry in the 1990s. During the 1996-1997 school year, he had to brew a Draught of Peace for Potions, but could not do so because he lacked the horned slugs that were one of the ingredients required to make the potion. He traded syrup of Hellebore with Harry Potter in order to get the horned slugs he needed.

Appearances

 * Harry Potter and the Half-Blood Prince (video game)