I wish the shades of red/pink were either deeper or more vibrant, or just make Nico's text black entirely. As it stands it almost seems like Maki was doing all the talking.
Really?! Iroha doesn't look too happy though. Or maybe she's crying out of sheer joy? It's hard to tell without any dialog or commentary from the author.
For all the teasing Maki gets for not being honest with her feelings/intentions/whatever, Nico isn't exactly being up front either. Still, they both get what they want out of it, and it's adorable.