the story after chapter 848 is hard to accept because the mc turn idiot without brain rape rias and many girls because he thinks an aphrodisiac is a buff so I think the character is an idiot
Haru was sure that if the person who performed this quest was Korosensei then without doubt Korosensei would be very impatient since Korosensei could travel 80 km distance in a second.
Yuuki was thinking that this girl had the heart of an angel. He really liked her and wanted to help her. He knew she was Shouko Nishimiya. She was deaf and couldn't hear him. He knew that actually she wasn't completely dead but because of bullying acts during her elementary school made permanent damage to one of her ears completely.