Tomo's dad and Jun both need to not be massive dongers about this, especially her dad. He has no say in who his daughter dates, and he especially doesn't get to issue ultimatums. His feelings are irrelevant.
In Jun's case, he should respect Tomo's wishes over her dang dad's! If he wants her dad's blessing, sure, fine, that's okay. But going "well, your dad said this, so we can't date." It's her choice, not her dang dad's. Respect those wishes more!