Well Tomo's Dad was sort of right. Jun is too pathetic to date Tomo if he has to rely on her to fight his battles for him. Hopefully Jun will interject or at least be allowed to "help" Tomo via tag-team but as of now, this is only serving to make Jun look weak. And everyone here doesn't seem to care because "you go girl". We already know Tomo is stronger than Jun, and it wasn't like Tomo standing on the sidelines in support of Jun would make her a weak character.
Yeah the Dad not allowing Tomo to date is a dumb plot line, however this could've serve to show Jun's strengths though his love for Tomo, but now that's not going to happen. I know people in the comments are more than likely saying "He tired to fight the Dad. Isn't that enough?" Nope, it shows that he can't do much without Tomo doing it for him.