[ Whatever their history was, the insults toward Takeru are definitely not something that Yui is going to stand for. She seems to get indignant almost immediately when she says "hoped" as if he had failed to meet her expectations. ]

Takeru-san isn't a coward. I've never met his father, but Takeru-san is one of the bravest people I've ever met. He's saved my life before and he's stood up to Zeus-san with me, even taking responsibility for his actions and doing what he had to in order to help keep everyone together to graduate. Please don't speak ill of him.

[ The 'please' might've made it seem like a request, but Yui's tone said otherwise. ]

I'm sorry that your history seems to reflect ill on part of his family.