Soujuurou's immediate fondness towards Aoko, being innocently unmindful of her brashness towards him.
Aoko's heartfelt confession of admiration towards Soujuurou in Chapter 5, following their decisive battle against Alice in the amusement park. Her sincerity in her words as she thanks him for saving her in the last minute is a testament that she's nicer than she seems.
Aoko defending Soujuurou's right to work more than one part-time job.
Soujuurou deciding to come back and help Aoko, putting his trust in her.