Koisuru Harinezumi

To change from 'like' to 'love', what strategies must Ozawa use on Kazuki?
Kazuki Heiji is the troublemaker. He gets into fights and is very cold to everyone. Ozawa Kii witnesses a fight between a classmate and Kazuki but he unexpectedly says he wants to become friends? And what's this about 'like' and 'love'...?!