It seems she's actually a bit younger than him.

[Junko stops to really think about it, leaning into Masaomi a little more.]

I can see how they would get along, though. Olivia isn't as confident in herself as Koji is but she's sort of loud and has a lot of trouble vocalizing her feelings in a succinct manner. She's smart, but not exactly eloquent.

[But then, sexual frustration will do that to you.]

I feel like the house will be a lot louder with her in it, but that's not a bad thing.