@RUD3DUD3
he consoled her when she got rejected.
he said theres nothing wrong with "seriously liking a face", and didn't call her mean things for being shallow.
Otoya said iori is the type to accept who you are no matter what you are.
You could see she started to develop feelings for him at the end of the uninhabited island arc. She stares at Iori from afar before leaving.
And then every time she appears its hinted. She asks about Iori getting dumped by Chisa. She overloads his work schedule when she hears that he was going to go on a trip with Chisa. etc. etc.