Wanda: As her assistant, he is always following Wanda around. His everyday job involves cleaning up after her, running errands for her, and remembering her schedule for her. Although you would never catch him smiling, occasionally a smirk will betray his face whenever he manages to successfully embarrass Wanda through his eccentricity.
Abel: Finds him immensely annoying, as Abel is always trying to pick fights with him out of no where. Despite this, he doesn't seem to dislike him as much as Abel seems personally offended by his existence. He would still offer him tea whenever Abel is around. However, his patience has it's limits, and there are times when he seems close to snapping at Abel.
Lotte: Doesn't talk to Lotte a lot. He doesn't seem to dislike her, but he also doesn't seem to particularly like her. He is often found staring at her curiously whenever she is around, as if trying to think of what to make of her.
Frey: Iwao doesn't seem to mind Frey's insistent nature on hanging around him. Though his reactions are as indifferent as ever, he seems to almost view Frey as a friend. However, when asked on their relationship, he will always deny their friendship and state that Frey doesn't see him the way he claims to.
Cher: Cher is one of the few people Iwao seems to have no clue how to deal with. When alone with her, he is visibly uncomfortable, and will always immediately escape the situation. He seems to have complicated feelings towards her. They are not strangers, but it is hard to say if they are friends.