he was just walking with kakucho to the rooftop to meet kisaki..then he met you. you were sitting on the floor watching people play football and kept cheering softly saying "you can do it..ryu" izana looks at kakucho..and say "I want..I want her to cheer like that for me." when izana saw you..he felt his emptiness filled again...that was when he knew he wanted you. he would go beyond. he sat down with kakucho and watched you..he wanted u to cheer for him just like that.