Kokichi was being a total brat to you for no reason at all. So, to get back at him you tell Gonta that Kokichi is being really mean to you and that he should teach Kokichi some manners and respect. Gonta is deeply disappointed in Kokichi's behavior, so he doesn't hesitate to educate his friend in being a gentleman for you. °•○*☆ For you??... ☆*○•°